History Characters / TheLustrous

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!The Lustrous/Gems

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/lustrous_header_edit_4.png]]
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[[foldercontrol]]

[[folder: In General]]

* AmazingTechnicolorPopulation: Their skin is actually the color of their alloy. Most days they wear a white powder over their skin to protect themselves from corrosion, making them look like they have pale skin at the default.
* AmbiguousGender: Since they are just gem beings with NoBiologicalSex, they have no confirmed gender. The English version keeps their dialogue genderless, using "they" and "them" as personal pronouns. In the original Japanese, however:
** Most gems seem to tend towards using the masculine [[UsefulNotes/JapanesePronouns first-person pronouns]] of 'ore' and 'boku' to refer to themselves. The ones who don't, only three gems thus far, use the gender neutral " Watashi ", due to their more formal way of speaking.
*** Oddly enough, Alexandrite is the only gem to use the first person pronoun ’atashi’, which is strictly feminine. It could be justified since Alexandrite made it known that they want to be seen as “cute” by the other gems. It’s clear that various gendered first person pronouns exist in their world, despite a majority of the gems having a preference for masculine ones and not truly having a concept of gender.
** When they refer to the older gems, like Yellow Diamond, as their [[UsefulNotes/JapaneseSiblingTerminology siblings]], they use 'Onii-sama', 'Nii-sama' and 'Aniki'. Diamond also referred to Bort as 'Otouto'/'Little Brother' when reprimanding Phos.
** Diamond, when referring to the younger gems as a collective, referred to them as " Otoutotachi " meaning " Younger Brothers ".
** When referring to other gems, they use 'Kare' which translates to 'he/him'.
** Regardless of what first-person pronoun they use, some gems' speech patterns are decidedly more masculine or feminine than others, likely because of their personalities. For example, Jade uses more masculine speech, while Dia tends towards feminine language. Rutile, a doctor, sticks to [[{{Keigo}} formal]], gender-neutral language.
** Given a lampshade in Chapter 72, where Barbata addresses Phos as a "crystal lady...or not, I don't know". Additionally, [[spoiler: Cairngorm is given the title of "Moon Princess" after they marry Aechmea]].
* BarbieDollAnatomy: Zigzagged; on the one hand the gems are sexless and, as shown with Euclase when they strip down in chapter 8 in order to get covered in the anti-salt resin, they don't appear to have visible genitalia. But they still have asses and Euclase gets embarrassed when another gem sees them naked. It's a wonder if they actually have anything to hide (that we haven't seen) or if the gem is, for some reason, just modest.
* BizarreAlienBiology: Ambulatory gem formations that arose from fossilized human bones living in a symbiosis with microscopic life known as "inclusions". Every inclusion can hold memories, so their entire bodies are essentially their brains, with any damage affecting memory. The inclusions themselves seem to be photosynthetic like plants, but ''only'' require sunlight and can survive in both freezing temperatures and a vacuum. Without enough light, they quickly go dormant, meaning most gems will sleep at night and during winter.
* CurtainsMatchTheWindow: Since they're gem people, their bodies are all made of the same material, so usually the color of their eyes matches the color of their hair. [[spoiler:Post-moon migration, Cairngorm is the only exception, given their eyes were replaced with eyes of their gem type while the hair is still scraps of Ghost's hair.]]
* DarkAndTroubledPast: [[spoiler:After a meteor struck the Earth, life was forced to flee back into the seas, though the ones that couldn't get there in time died, with some sinking into the sea. Their bodies decomposed and were turned into "inanimate objects", but over [[TimeAbyss the ages]], some of these remains were crystallized and became sentient, thus birthing the Lustrous, who would return to land.]]
* DeepSleep: They all hibernate during winter, since the sunlight becomes so faint. The exceptions are Sensei, who is always sleepy regardless of the weather, and whoever is the Winter Guardian. The Winter Guardian endures the effort of staying awake in low sunlight in order to keep Sensei company in protecting the other sleeping gems.
* EvilCostumeSwitch: [[spoiler:Eventually, all of the Gems who went with Phos to the Moon switched their old uniforms for thematically similar, but unique white clothing from the Lunarians.]] Dips into NonUniformUniform as well.
* FirstNameBasis: All of the Gems are like this since they have OnlyOneName, but after [[spoiler:Sensei steps down from his role as leader]] the Gems begin to call him by his first name as well.
* FlatCharacter: Quite a few of the gems are one-dimensional due to the amount of characters in the cast and because most of the events of the story happen directly because of Phos without their involvement.
* {{Immortality}}: The gems are completely immortal. They can live on naturally for seemingly forever, and, if broken, they can wake up as long as they have suitable material. Being taken to the Moon is the closest to death they can reach.
* ImmortalImmaturity: Despite looking like teens physically, centuries old existentially, and educated by Sensei (their guardian), some of the Lustrous still are, on a psychological level, children that can act a lot younger than even their physical forms appear to be.
* KilledOffForReal: Any gem who gets taken to the moon is treated as this. Later confirmed to undoubtedly be the case, as [[spoiler:the {{Lunarians}} grind any captured gems into powder and scatter them across the moon's surface. The powder also gets eaten by the captured Admirabilis, lessening chances of revival.]] However, as per Phos's deal, [[spoiler:the Lunarians have agreed to try to synthesize what remains of the gem powder back into full gems]], making this fate come into question again for gems that are harder than 4.
* LaserGuidedAmnesia: Their bodies are quite literally their entire being, including memories. If any part of it is lost, then part of their memories go along with it.
* MotiveDecay[=/=]TheDarkSideWillMakeYouForget: [[spoiler:The Gems that went with Phos to the Moon largely forget about the motives that led them to their decision in the first place, preferring to play around with each other and the Lunarians.]]
* MourningClothes: According to an [[https://blog.sakugabooru.com/2017/10/31/land-of-the-lustrous-director-takahiko-kyougoku-interview/ interview]], the uniforms the Gems are wearing are actually funeral attire. [[spoiler:And given that Kongou is built to be a monk that passes the dead on, it brings their whole culture to a new meaning.]]
* NoodlePeople: The mangaka draws the gems as really thin humanoids with long legs.
* NoBiologicalSex: They have no genitals or other physical sex characteristics.
* NonHumanNonBinary: They don't consider themselves male or female due to being born with NoBiologicalSex, and choose individually how masculine or feminine they want to present. This is in contrast with the other nonhuman races they encounter, like the Admirabilis and Lunarians, who clearly gender themselves and others.
* NonUniformUniform: In contrast to their usual uniforms, the gems' sleepwear is all unique (though all a similar shade of white) [[spoiler: and while the moon gems all wear white, the similarities in their outfits end there.]]
* [[ShesGotLegs They've Got Legs]]: And their outfits, one and all, seem to be designed to highlight it.
* ThePowerOfTheSun: They feed and function on sunlight.
* UndyingLoyalty: They all have an inkling that Sensei knows way more than he lets on, and have a suspicion about his connection to the Moon People, but all but one love and serve him anyway.
* WhoWantsToLiveForever: Slowly applying to the gems. Those [[spoiler: on the Moon want to leave their gem bodies and become Lunarians]] while those on Earth [[spoiler: are shown to forget critical information after long periods of time in uneventful stasis, allowing them to happily live on without being bothered by their immortality in the larger picture.]]

[[/folder]]


[[folder:Phosphophyllite]]
!!Phosphophyllite
[[quoteright:185:https://static.tvtropes.org/pmwiki/pub/images/phosphophyllite.png]]
[[caption-width-right:185:[[HeroicSelfDeprecation Worthless]] [[FailureHero Slag.]]]]
[[caption-width-right:185:[[labelnote:Click here to see Phos after the 102 year time skip.]] https://static.tvtropes.org/pmwiki/pub/images/phosponytail_2.png[[/labelnote]]]]
[[caption-width-right:185:[[labelnote:Click here to see Phos [[spoiler: after coming back from the moon.]]https://static.tvtropes.org/pmwiki/pub/images/phos_8.png]]]][[/labelnote]]
[[caption-width-right:185:[[labelnote:Click here to see Phos [[spoiler: after being shattered and brainwashed.]]https://static.tvtropes.org/pmwiki/pub/images/phos_shattered_8.PNG]]]][[/labelnote]]

-->'''Voiced by:''' Creator/TomoyoKurosawa (Japanese), Creator/SarahWiedenheft (English), Tamara Veppo (Latin American Spanish)

The protagonist. Starts the story as a vain and weak gem that brings trouble for everyone, until the moment the gem gets the job of writing a Natural Encyclopedia. Phos' inclusions have the ability of maintaining themselves and Phos' consciousness no matter how many fragments the gem loses.
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* ZeroPercentApprovalRating: By the time they go back to the surface for a third time, the Earth gems are all distrustful of [[spoiler:Phos and treat them much worse]], all contributing to [[spoiler:slashing Phos into little pieces when Phos lifts a hand towards Sensei out of desperation]].
* HundredPercentAdorationRating: [[spoiler: Despite how bleak their life has become, they're still universally worshiped as a god by the Admirabilis, both on land and the moon, to the point where the latter population is willing to commit suicide for them if ever ordered to. This is only due to being digested alive by Ventricosus and getting gifted legs from Aculeatus at an early point in life though, carrying the scent of that royalty ever since.]]
* AffectionateNickname: Phos.
* AllForNothing: Their [[spoiler:journey to the moon is shaping up to be one. Not only was it traumatic for them, it lost them all the gems' approval, got other gems stranded on the moon, and even Phos's goal of reviving the dusted gems seems to have been cancelled for unknown reasons following the time skip.]] To make matters worse, Aechmea was [[spoiler:not being completely honest about the effects of Sensei's prayer, and Phos can potentially bring about an apocalypse.]]
* AmnesiacHero: Of sorts. The Lustrous store their memories within their gem bodies. Phos loses part of their memories when their legs, a full third of Phos' mass, are chopped off. They continue to lose more and more of their memories every time they lose body parts, which turns out to be fairly often. Rutile and the other gems start to really worry about Phos' integrity after [[spoiler:Phos' head gets taken, after which less than 50% of their original gem mass remains]].
* AndIMustScream: Not only were they disintegrated alive, they were left [[spoiler:shattered in pieces left in dark boxes for 220 years after returning from the moon.]] Sensei slowly [[spoiler: sought out and put the pieces back together during this time. When Phos is put back together enough to speak, they want nothing more than to die.]]
* TheAssimilator: Their inclusions have a tendency to spread and corrupt anything they come in contact with, best shown in how they have yet to reject a single mineral they have come in contact with. May it be agate, gold, platinum, [[spoiler: lapis lazuli or pearls,]] as seen so far.
* [[AxCrazy Ax-Crazy]]: While Phos has been slowly becoming more unhinged, depressed, and miserable as the series has progressed, [[spoiler: Phos finally reaches their breaking point in Chapter 82, where they declare that they will turn every gem into dust after Adamant's prayer is interrupted by Bort's attack.]]
* TheBabyOfTheBunch: At the start of the series Phos is the youngest of all the Lustrous at 299 years old and has the maturity to match. This is eventually subverted though [[spoiler:after the 102 year TimeSkip]] as new Gems are creating and introduced in the series.
* BeCarefulWhatYouWishFor: At the start of the series Phos was desperate to be a warrior and prove themselves to the other Gems and to Sensei. They eventually got their wish by the end of the Winter arc at the cost of their mentor Antarcticite and their innocence. Phos even lampshades this noting that all they wanted was to be a warrior and all they got for it was a dangerous job.
* BecomeARealBoy: Implied as of Chapter 77: [[spoiler: Phos is able to get past Sensei's authentication system and he tries to obey Phos's plea, highly suggesting Sensei now sees Phos as a human rather than a gem. This was exploited by Aechmea, who planned since the ''near beginning'' to turn Phos into a human stand-in, or failing that, something beyond humanity.]]
* {{BFS}}: Uses Antarc's ice hatchet for a while during and after the Winter Arc, before switching to a regular sword. [[spoiler:Gets a huge, shiny new sword from the Lunarians during Phos' trip to the moon]].
* BreakTheCutie: Phos' first true moment of despair is after they lose their mentor Antarcticite. The rest of the series is one long TraumaCongaLine with Phos becoming increasingly cynical over time.
* ButtMonkey: At the beginning of the story, this is Phos's only recognition. Even after becoming stronger, the gem still tends to get the short end of the stick. That is, until the Winter arc.
* TheChampion: Becomes one in the eyes of the Admirabilis. And after [[spoiler:coming back from the Moon]], the other Lustrous see Phos as their "hope".[[spoiler:..at least until the Gem starts taking other Gems with them to the Moon. Then they're seen as a traitor.]]
* CharacterDevelopment: From an arrogant, useless child to a mature warrior who starts showing signs of PTSD and distrust about the surrounding world.
* ClothingDamage: Spends nearly their entire visit [[spoiler:to the moon half-naked. Cicada lampshades it]].
* CombatStilettos: Gains a pair after Antarcticite's capture, with the heel made of the gold and platinum from Phos' arms.
* ConspiracyTheorist: Starts suspecting a relationship between Kongou-Sensei and the Lunarians. [[spoiler: They're proven correct during their visit to the moon]].
* ConstantlyCurious: They're incapable of just leaving things be... no matter how much it costs them or others. Seeing environments other than the gems' island only made them want to see more.
* CorruptTheCutie: Phos becomes a lot darker, manipulative, and morally ambiguous after [[spoiler:receiving Lapis Lazuli's head as a substitute for their own.]]
* TheDarkSideWillMakeYouForget: [[spoiler: After getting Lapis's head grafted onto their body, they forget their promise to Cinnabar, and after going to the Moon it is no longer their priority.]]
* DeadPartner: Antarcticite. Then Ghost Quartz. [[spoiler:Later, Phos themself becomes this in the eyes of Cairngorm... for a while, at least]].
* DeathSeeker:
** When their emotions take the better of them after mistaking Cairngorm for Antarc, the foreign alloys in their body try to pulverize their head and part of their body.
** In Chapter 79, [[spoiler:when Sensei puts her back together 220 years after having been ostracized by the other Gems and being [[AndIMustScream cut into a bunch of pieces and scattered around the world in an attempt to ensure they can't come back]] and only now being revived because [[{{Unperson}} the other Gems have finally forgotten about Phos]], Phos asks Sensei to [[MercyKill pray]] for them. When he stops partway through for currently unknown reasons, [[NightmareFace Phos doesn't take it well]].]]
* {{Determinator}}: Both with their original goal of helping Cinnabar find a happier job, and with their new goal of unveiling the mystery of the Lunarians. [[spoiler:Now with their promise to make Sensei free the Lunarians' souls in exchange for bringing the dead Gems back to life.]]
* DidNotThinkThisThrough: They have a problem of acting first before thinking, which gets them into serious trouble in many arcs.
* DiscardAndDraw: After Phos loses their original legs and gets agate replacements they suddenly gain SuperSpeed that can rival Yellow Diamond. After getting their gold and platinum alloy arms the weight of them ends up costing Phos their mobility but they can now change the composition of their arms to make a powerful offense and defence.
* DoomMagnet: Most people that Phos encounters over the course of the story finish the arc in a worse state than when they started ([[spoiler:Antarc and Ghost are taken to the moon]], for example).
* EtherealWhiteDress: Wears all white following [[spoiler:the return from the Moon]] and gives off an air of mystery to the other gems.
* ExpositoryHairstyleChange: Phos' hair becomes shorter after the timeskip of the Winter Arc, as they used some of their hair to repair the cracks made by the new metal alloys in their body. Gets long hair after [[spoiler:gaining Lapis' head]], but it goes back to being the length it was after the Winter Arc after getting cut short by an arrow.
* EyeScream: [[spoiler:Gets their eye graphically torn out and replaced with a pearl eye made by the Lunarians.]]
* FaceHeelTurn: In a sense. [[spoiler:Phos is currently working for the Lunarians]].
* FailureHero: Everything Phos does ends up in a disaster for either themselves or for other people. They couldn't find a job they were good at for the first 299 years of their life, and only found themselves getting in the way. Bringing Ventricosus back to the ocean ends with Phos losing their legs; staying up for the winter and helping Antarcticite ends with Phos losing their arms and Antarc getting taken to the moon. Pairing up with Ghost ends with Cairngorm emerging, but only after Ghost is chipped away and taken to the moon. Even their night raid ended prematurely; [[spoiler:the gem's team never gets to negotiate with Sensei, only fighting the Earth Gems and getting Padparadscha severely damaged. When Phos goes to the Gems alone and begs Sensei to pray for the Lunarians, the Gems shatter Phos and separate the pieces.]] Ultimately, Phos does get one long term goal right, unknowingly; [[spoiler:the Lunarians stop attacking the Gems for 220 years and the Gems live in relative peace, but Phos has not been able to revive the other dusted Gems and everyone has forgotten Phos even ''exists''.]]
* FamedInStory: The Admirabilis end up revering Phos as a sort of god later in the story.
* FakingAmnesia: After [[spoiler:going to the Moon]], Phos pretends to have forgotten everything that happened to them there. Given the amount of times they genuinely did lose their memory, it works for a while.
* TheFriendNobodyLikes: For a good chunk of the early story, Phos was just a Gem that everybody tolerated at best and were annoyed with at worst. Phos' overall uselessness didn't help smooth things over with their peers either. Even when the Gem becomes stronger and more involved with the problems of the story, many people don't see Phos as anything other than an acquaintance. [[FromNobodyToNightmare Things get worse from there]].
* TheGadfly: Enjoys tormenting their partner Cairngorm with sarcastic groveling and play acting.
* GlowingEyes: After [[spoiler:returning from the moon Phos's pearl eye glows in the darkness, spooking some of the gems.]]
* {{Hallucinations}}: After Antarcticite gets taken by the Moon People, Phos constantly sees a hallucination of the gem in their whole state and then breaking shortly after, and sometimes converses with it. The cause is a deteriorating mental state.
* HasAType: Phos' major partners (Antarc, Ghost, and Cairngorm) have all been white-haired. It might be the gem's subconscious reminding them of Antarc.
** Additionally, many of the people Phos interacts with later in the story (Cinnabar, Antarticite, Cairngorm, Bort) like to call Phos out on their faults or are sarcastic/snarky. Phos seems to have a thing for strong-willed Gems.
* HeroesPreferRedheads: It's not made clear if the feelings are romantic in nature, but Phos seems to have a thing going on for Cinnabar after Cinnabar saved them. [[spoiler:Padparadscha, a gem Phos later partners with for a mission, also has bright red hair.]]
* HeroicBSOD: [[spoiler:Phos has a very hard time adjusting to all the revelations that Prince gives them about their situation and what exactly the Moon People are. And once they figure out that their comrades have been ground into powder as decoration, they barely say anything for much of the Prince's explanation, and tries to attack him to no avail.]]
* HeroicSelfDeprecation: Let's just say Phos' self-esteem is far from great after suffering continuous failures.
* HeartIsAnAwesomePower: Turns out Phos' inclusions do have an ability, where the gem's ego is retained no matter how small the fragment of Phos' original form is left. This makes Phos pretty much completely immortal as long as they have something to attach a part to.
* HyperAwareness: The power Phos gains after getting a [[spoiler: head]] replaced.
* IHatePastMe: When hearing about the things they used to do before getting all of their attachments, Phos seems very embarrassed about how reckless and foolish they once were. Especially since they can't remember a lot of it.
* ILetGwenStacyDie: At their core, the one thing that has motivated Phos the entire journey is Antarcticite's kidnapping.
* ImportantHaircut: Has their hair sliced off [[spoiler: after having Lapis's head grafted on]], both showing they are [[spoiler: not Lapis]] and not [[spoiler: their innocent self either.]]
* InferioritySuperiorityComplex: A downplayed example. Bravado was really all Phos had.
* InnocentlyInsensitive:
** In Phos' pursuit of knowledge and strength, they've become somewhat insensitive to some of the gems that care about them, like Cinnabar (''especially'' Cinnabar) and Jade when they become traumatized.
** In a more extreme example, Phos thought the Gems in their party would be more understanding if they show them and inform them of [[spoiler:the moon dust made of ''all of their loved ones'']].
* {{Irony}}: Their arms being replaced by gold and platinum alloys is a reference to the Japanese art of kinsetsuroi, in which broken pottery is repaired using gold, silver, or platinum lacquer. Kinsetsuroi is seen as a metaphor for [[TrueArtIsAngsty beauty in struggle]], but ironically, another value in Japan is innocence. Stories that involve a child being involved in something bad (such as killing) is seen as a tragedy for that child's loss of innocence. This serves to underscore that Phos's story is a beautiful tragedy.
* ItIsDehumanizing: After coming to see the Lunarians' side of the conflict, Phos begins to see Sensei as a "thing" and a broken tool. After hitting their RageBreakingPoint, they outright refer to Sensei as "Machine".
* ItsAllMyFault: Feels personally responsible for the kidnappings of Antarcticite, Ghost, [[spoiler:Morganite, and Goshe]], but feels especially guilty for what happened to Antarc.
* TheKlutz: Tends to break things and make trouble for everyone, at least at the beginning.
* LaughingMad: [[spoiler:As of the third moon raid, Phos has descended into mad laughter, especially witnessing the death of other gems.]]
* MasterOfTheMixedMessage: Oh, it gets bad with Cinnabar. Phos has the other Gem on tenterhooks every time they meet, with them telling Cinnabar how they constantly have them in the back of their mind or trying to manipulate their feelings by saying they "need" them.
* MeaningfulName: Phosphophyllite is known as the "holy grail of minerals", befitting how Phos is the main character of the story.
* MentalFusion: May have fused with [[spoiler: Lapis's mind]] after having [[spoiler: their head replaced, indicated by how manipulative they have become.]]
* MikeNelsonDestroyerOfWorlds: Phos has no idea that [[spoiler:Sensei's prayer will affect not just the Lunarians, but the Gems and Admirabilis as well]] and is currently trying to force Sensei to pray.
* MiseryBuildsCharacter: Replacement of lost body parts does this too, for Gems.
* MismatchedEyes: [[spoiler:After getting the synthetic Pearl eye from the Lunarians, has one blue eye and one white eye.]]
* MorphWeapon: Phos' arms get replaced with gold and platinum alloys, which can be stretch and manipulate in various ways to fight.
* MyEyesAreLeaking: Phos cries alloy tears after the Winter events, without even knowing what tears are. Kongou-Sensei explains they are a minor inconvenience from an ancient species.
* NightmareFace: [[spoiler:The one they make in Chapter 80 is this series' NightmareFuel image.]]
* OffWithHisHead: [[spoiler: Phos' head gets lost in battle against the Lunarians. It gets replaced with Lapis Lazuli's head]].
* PowerAtAPrice: The different upgrades Phos gets come with several costs, both to Phos' memory and mental state.
* ThePromise: Promises to find Cinnabar a job only they can do. Eventually, however, most of the memories of that promise vanish, though Phos never lets go of the idea. They also promise [[spoiler:the new]] Morganite and Goshe that they'd try to let the pair meet [[spoiler:the old Morganite and Goshe]].
* ProperlyParanoid: Regarding Kongou-Sensei and Sensei's supposed connection with the Lunarians, Phos' starts becoming more and more anxious about the mysteries surrounding those facts.
* RedOniBlueOni: The red to [[spoiler: Padparadscha's blue]] during the Moon arc. Phos [[spoiler: wishes to smash Sensei to pieces after hearing Anarctitite cannot be repaired]], while [[spoiler: Padparadscha counsels calm and coordinated planning in order to save the other gems.]]
* ReplacementGoldfish: Offers to become one to Cairngorm for Lapis after [[spoiler: Phos wakes up after getting their head replaced with Lapis']].
* SadClown: By the later volumes, its clear Phos is pulling this to cover for their own self loathing.
* SadisticChoice: [[spoiler: Must choose between killing the remaining Admirabilis to restore the kidnapped Gems or refusing to sacrifice the creatures at the expense of Phos' people, since the Admirabilis have eaten quite a bit of the gem pieces and incorporated them into their shells.]]
* SanitySlippage: As the gem loses more pieces of themself, they become more and more manipulative and take more and more risks. They may be suffering from PTSD, as they mistake Cairngorm for their former partner Antarc during battle.
* SecretKeeper: Keeps in secret the method by which [[spoiler: Kongou-Sensei fights]].
* SecretlySelfish: Accused of this by Bort during their confrontation in the night raid.
* SeldomSeenSpecies: ''Houseki no Kuni'' is probably the first you've ever heard of phosphophyllite. In real life, phosphophyllite is highly prized for its rarity, and as a result, it is too valuable to be broken up or cut on purpose without screwing up on account of its fragility.
* SexyBacklessOutfit: [[spoiler:After going to the Moon and getting a change of clothes from the Lunarians,]] Phos gains a backless white bodysuit and seems much more forward.
* ShrinkingViolet: Padparadscha distinctly remembers, back when they saw Phos 237 years prior, that Phos always used to hide behind Sensei's robes. This is even shown in the first chapter that Phos hid amongst Sensei's robes during the first Lunarian battle.
* SlowlySlippingIntoEvil: For all of Phos' good intentions, they unfortunately slowly slip down this slope soon after [[spoiler: getting Lapis's head]]. First [[spoiler: going to the moon and then making a DealWithTheDevil with the Lunarians, then manipulating other gems to come the moon with them, eventually asking Sensei to pray for them alone once Sensei admits he cannot pray for all the Lunarians, then desiring to break all the earth gems when even Sensei praying just for Phos has failed. Now Phos simply wants to destroy]].
* SuperSpeed: For a good while, thanks to their Agate legs. However they don't come with the tertiary powers required like the inertia control and so Phos's super speed is useless in actual fighting. Loses this power after gaining their [[MorphWeapon alloyed arms, as the weight of their arms slows them down]].
* SwallowedWhole: By Ventricosus the Sea Slug. Gets better, though.
* SymbolicBlood: The gold-platinum works as this for Phos, pooling around them whenever they're cut in half, peeking out when they're cracked, or dripping and melting when Phos feels particularly self destructive. It also generally represents their emotional state at the time.
* TaremeEyes: Starts out with these in the beginning of the story and in their youth, but switches to TsurimeEyes after the Winter arc. Phos' eyes become even more tsurime after [[spoiler:they gain Lapis' head]].
* ThisLoserIsYou: Compared to the other Lustrous, Phos grows and changes constantly (both physically and mentally) throughout the story, cries, and looks different as time passes, much like a human would. They're also a huge screw-up, they rush headlong into plans without considering the consequences, and they ultimately come off worse for the wear while becoming stronger.
* TranquilFury: After hearing [[spoiler: Antarc cannot be repaired,]] Phos sweetly comments on how they should [[spoiler: smash Sensei into pieces so as to not make Antarc lonely, frightening the other gems until Padparadscha calms them down.]]
* TraumaCongaLine: Losing two partners in the span of a year, alongside with the revelation that everything they had previously believed may be a lie, doesn't really do wonders to Phos' sanity.
* TookALevelInBadass: Goes from being unable to even stand up and fight to being on par with Bort [[spoiler: to coming to surpass Bort.]]
* UndyingLoyalty: Tends to inspire it in others, from Ghost to Cairngorm and finally [[spoiler:Padparadscha.]]
* UniqueProtagonistAsset: Phos' ability to accept parts from such wildly different materials like agate, gold, and lapis lazuli, is unusual, if not unique, among the Gems. By the time [[spoiler: Phos' ''head'' is being replaced]], Rutile begins to wonder [[TheseusShipParadox whether they can still be called "Phosphophyllite"]].
* {{Unperson}}: [[spoiler:They've come to be so revolted by the Earth Gems for their actions that they tear Phos into several pieces and scatter them around the Earth so that Phos can definitely never come back together. Sensei ultimately proves them wrong by putting Phos back together 220 years, but it partly only takes that long because he needed the Gems to forget who Phos was so that they wouldn't make him start all over. When Phos learns of this, [[DeathSeeker they ask Sensei to pray for them.]]]]
* VetinariJobSecurity: Takes on Antarcticite's role as the winter watchman.
%%* VitriolicBestBuds: With Cairngorm.
* WellDoneSonGuy: At the very least, their primary motivation in the beginning of the story was to have some use to the Lustrous circle. By the looks of their "tearing" up when Euclase tells them they're needed, the feeling never goes away [[spoiler:even as Phos' parts get replaced one by one]].
* WellIntentionedExtremist: They really do think that some morally questionable ideas, like [[spoiler:betraying Kongou]] or [[spoiler:taking Pad to the Moon]], are for the good of the rest of the Lustrous.
* TheWhitestBlackGuy: After coming back from the Moon, Phos is stuck between two worlds yet isn't really a part of either. The Lustrous don't see Phos as themselves or as a Lustrous ally, while the Lunarians still see Phos as a Gem.
* YouRemindMeOfX: Ghost and Cairngorm's willingness to partner up is partially based on how much the Gems see Lapis Lazuli in Phos.
[[/folder]]

[[folder:Sensei]]
!!Kongou-Sensei
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/kongou.png]]
[[caption-width-right:300:The Scariest Sensei.]]

-->'''Voiced by:''' Creator/JojiNakata (Japanese), Brian Mathis (English), Matias Fajardo (Latin American Spanish)

Kongou-sensei (金剛先生 ''Kongou-sensei'', lit. Adamant Teacher) is the Mentor and Leader of the Lustrous. Very old and very mysterious.
----
* AffectionateGestureToTheHead: Seems fond of doing it to the other gems, for any number of reasons. Mostly comfort and praise though.
* AffectionateNickname: Tourmaline quickly comes to nickname Sensei after he [[spoiler:steps down]], calling him "Kon-chan".
* AIIsACrapShoot: [[spoiler:Was created to release human souls into the afterlife, but for some reason isn't completing the task. Prince believes he broke down over time, but is implied there is another reason Sensei has rejected the idea. When Phos flat out asks him to pray, he displays an error message and fails.]]
* ArtificialIntelligence: [[spoiler:Revealed to be a machine created by humans]].
* BadassBaritone: Comes with the perks of having Creator/JojiNakata's deep voice.
* BaldOfAwesome: Not a hair on that scalp, and can kick anyone's ass with ease.
* BadLiar: Starts to get more prominent as the story goes on. When the Gems give him information that he's familiar with, he denies having a connection to it.
* BeneathTheMask: He admits that being a leader and mentor for the gems was the hardest thing he ever had to do because he always had to be knitting his brow, and was also [[spoiler:designed to be a servant that deferred to the last humans]]. Once they decide to start their relationship anew on equal terms, [[spoiler:he seems to adopt a more vacant, relaxed expression.]]
* CastFromHitPoints: Eventually Phos discovers this is Sensei's method of fighting: by [[spoiler:breaking tiny shards from his hands and throwing them to the Lunarians. Since the shards are so small, Sensei doesn't lose that many memories but still seems somewhat troubled about doing it]].
* ClassifiedInformation:
** For some reason of another, Sensei won't ever tell the other Gems why the Lunarians are after them, or what they could possibly want from him. [[spoiler:Given that he's a robot from long before humanity finally went extinct, it's entirely possible that he's programmed not to say anything about it, no matter how much he may want to.]]
** Further confirmed in Chapter 64, when his attempt at revealing the truth [[spoiler:ends up being mostly fruitless due to most of his speech being involuntarily silenced as he tries to refer to the Humans, the Moon People intentions, or the previous cataclysm.]]
* DreamSequence: Has one during the Winter chapters, in which the Lunarians come to adore him. [[spoiler:They actually have done that, so the dream was likely a sort of flashback]].
* DubNameChange: Called Master Vajra in the French translation.
* EyesAlwaysShut: Tends to be like this most of the time.
* {{Glamour}}: Implied. The Lunarians state that [[spoiler: Sensei is built to seem trustworthy and impossible to harm to protect him from ill-wishers. They cannot help but feel love for him even as they resent being unable to pass on.]] Phos seems to be the only one immune to this ability. Yellow Diamond in particular [[spoiler: is in panic at the thought of fighting against him.]]
* HeavySleeper: Jade proclaims that it's easier to fight the Lunarians than wake up Sensei.
* {{Hunk}}: Has a very attractive and muscular figure underneath his robes. Ventricosus comments on his good looks in her slug form.
* ItsAllMyFault: Sensei blames himself for all of the suffering the Lustrous undergo. Whether it's Cinnabar's ongoing loneliness, any Lustrous being captured by the Lunarians, or [[spoiler:Phos' betrayal]].
* LargeAndInCharge: Leads the Lustrous, and towers over each and every one of them.
* TheLeader: Of the Lustrous [[spoiler:, though he steps down prior to the Night Raid. The Lunarians also seem to adore him, though it's left ambiguous]].
* LonelyAtTheTop: Implied by one of Sensei's speeches, although Sensei dodges Jade's direct question about this being the case.
* LostTechnology: [[spoiler:The artificial hexagonal diamonds he's constructed from cannot be replicated by the Lunarians, who can synthesize any other kind of gemstone with their advanced technology.]]
* LotusPosition: Usually sleeps or rests in this position, as Sensei likes to meditate.
* MadeOfIron: The hardest of all the Lustrous.
* MakeMeWannaShout: When Sensei screams at a Gem, their body shatters. This is usually done as a means of punishment when the gems disobey their orders.
* MeaningfulName: The last part of his full name, [[spoiler:Jizou Bosatsu]], is named for the bodhisattva Kṣitigarbha (also called Jizou in Japanese), who in Japanese iconography maintains the job of protecting the souls of dead children from punishment, much like how Sensei tries to protect the Gems from the Lunarians. He is also depicted with children in his robes, which sometimes also happens with Sensei and the Gems.
* TheMentor: For all the Lustrous, as it is in his name.
* MysteriousPast: [[spoiler: Clearly has a past with the Lunarians, and is overall considerably older than the other Gems. It turns out he was created to pray for them but is unable to complete the task anymore.]]
* NighInvulnerable: Being made out of [[spoiler: hexagonal diamonds,]] Sensei is unable to be broken by anything but [[spoiler: himself.]]
* OOCIsSeriousBusiness: Sensei was always one with a limited expressions set, but he did show concern and care to his Gems. When Phos mentions humans though, he [[DoesNotKnowHisOwnStrength accidentally shatters a table out of shock.]] That all goes away every time he interacts with Phos [[spoiler:after coming back from the Moon]], acting expressionless and unconcerned.
** At the end of Chapter 79, he sports a [[spoiler: ''terrified'' expression for the first time.]]
* OutOfCharacterMoment: Discussed. Sensei reveals [[spoiler: he had a very hard time disciplining the Gems due to this running contrary to his programmed nature to serve.]]
* OverlyLongName: His actual name is [[spoiler: Kongou Daihijishou Jizou Bosatsu (in the scanlations, Vajra Mahametta Ratana Ksitigarbha).]]
* PerpetualFrowner: Zizagged. Sensei acts like this, but commentary indicates it's a masquerade because Sensei seems to have a case of bad poker face.
* {{Psychopomp}}: [[spoiler:Should be the one to guide human souls to the afterlife, but is not completing the task for some reason]].
* Really700YearsOld: At least 3,600 years old by the start of the story. [[spoiler: Revealed by Prince to be at LEAST 10,000 years old]].
* {{Technophobia}}: Aechmea suggests Sensei has this, [[spoiler:because of not allowing the gems to experiment with new technology so they didn't figure out he was a robot.]]
* ThreeLawsCompliant: Implied. He only takes direct orders from humans, and when the "Professor" Lunarian is sent down, Sensei can't do anything against it and yells at the Gems for someone, ''anyone'' to take it down but him. [[spoiler:The series all but outright states that he recognizes Phos as something of a human after the gem returns from the Moon, given that he both answers to Phos when asked and immediately activates his prayer protocol after Phos begs him.]]
** Chapter 89 reveals the reason why he's this way: [[spoiler:he was intentionally built to be obedient to humans because his predecessor machine tried to wipe out humanity via purposeful miscalculation.]]
* TongueTied: When Phos is able to get information about Kongou from a third party, they theorize that Kongou isn't being deceptive about what he knows regarding the Lunarians; the problem is that he sincerely ''can not'' speak of it because doing so would require [[spoiler:permission from a human, which no longer exists]]. This seems to be proven correct when Kongou comes clean to the other Gems, as he opens with saying that there are things he ''can't'' reveal and his sentences are inexplicably cut off when he tries, until he gets to events specific to the Gems themselves.
[[/folder]]

[[folder:Cinnabar]]
!!Cinnabar/Shinsha
[[quoteright:234:https://static.tvtropes.org/pmwiki/pub/images/cinnabar.png]]
[[caption-width-right:234:The Lonely Child.]]

-->'''Voiced by:''' Creator/MikakoKomatsu (Japanese), Avery Smithhart (English), Carolina Cortes (Latin American Spanish)

A gem that constantly produces a poison (mercury) that damages and ruins its surroundings. Because of this they are set apart from other gems, a fact that saddens them greatly. They are in charge of the futile task of patrolling during the night.
----
* AdaptationExpansion: Cinnabar is given a lot more scenes in the anime then their manga counterpart likely to emphasise their importance to Phos' character arc. More specifically, Cinnabar is the one who destroys the Lunarian that Phos interrogates as opposed to the Amethysts.
* AffectionateNickname: Shinsha, which is actually an alternative spelling of their name.
* AwesomeButImpractical: The poison Cinnabar uses is powerful, can be formed into any size and shape, and provides excellent cover during a fight. But it harms everyone and everything except themselves, leaving entire grounds scarred until the poison eventually goes away. About the only practical use it has is collecting light at times when it is scarce (night, winter season).
* TheAloner: Forced to be alone due to their powers, and clearly resents that fact. [[spoiler:Not so alone anymore following the Moon exodus, given that Bort forcibly brings Cinnabar into the group to tell them what they know.]]
* BrokenAce: Really talented at pretty much anything, though their state makes it so it's all useless for them.
* BrokenBird: Constantly sad and depressed, and with a good reason.
* CommutingOnABus: As important as Cinnabar is to Phos, and as important as the anime's OP made the pair's relationship look, Cinnabar doesn't get much time in the manga to shine, only showing up once every major arc or so when Phos remembers they exist. At least a part of it has to do with Phos gradually forgetting certain bits of the promise they made with Cinnabar in the beginning. This is seen in the Anime as well, where Cinnabar hardly shows up later on in the series unless Phos needs to have a non-crucial interaction with them.
* CornerOfWoe: Most of the times their night patrolling just consists of doing that. They know no one is coming.
* DeathSeeker: They're actually hoping for the Lunarians to take them with them, since they feel so useless otherwise. [[spoiler:When Phos finally offers to take him to the Moon, though, Cinnabar doesn't take the opportunity, stating that [[MeaningfulEcho Sensei would be lonely]] if they left.]]
* DesperatelySeekingAPurposeInLife: Or rather, desperately seeking that Phos finds them a purpose in life. [[spoiler: In a dark twist, they get this as a result of Phos's betrayal, becoming a key fighter against the Moon Gems and partnering with Bort.]]
* ExpressiveAccessory: The mercury surrounding Shinsha constantly responds to whatever he's feeling. In particular, whenever Shinsha is surprised, like when their feelings for Phos are more prominent, the mercury starts to starburst.
* {{Foil}}: To Phos. Phos is a weak Gem that can't do any task because of incompetence, while Cinnabar physically ''can't'' do anything because of their dangerous body. Phos is immature and arrogant, while Cinnabar is somewhat world-wise and puts on a mean front to hide their real feelings. They both have a red/green contrast [[spoiler:later a red/blue contrast after Phos gets Lapis' head]], and both are the only ones that can cry alloy.
* GreenEyedMonster: Loudly proclaims to be jealous of Phos, who is useless but at least wanted by others.
* IJustWantToBeLoved: Their main problem. They want to feel like they're of use and wanted to ''somebody'', even if it meant being taken by Lunarians. Phos actually approaching them and promising to give him a job gave Cinnabar some measure of hope, and giving Phos advice whenever they came around gave them something to do. It's also a big reason why Cin wants to partner with Phos so badly.
* IJustWantToHaveFriends: Their other main problem.
* IronicEcho: "Don't go to the Moon", said to Phos as a reversal of what Phos said to Cinnabar in the second chapter.
* LonelyAtTheTop: According to Sensei, as Cinnabar's really talented but due to their problem is forced to be alone.
* LuminescentBlush: When Phos arrives and asks Cinnabar [[spoiler:to help them with their investigation against Sensei]] they tell Cinnabar that they have a job for them. Cinnabar then asks them what happened to the "fun" part and reminds Phos of ThePromise they made about finding Cinnabar a "fun job that only [they] can do" with a big blush on their face. This naturally makes Phos more then a little embarrassed as well.
* OddNameOut: Cinnabar is the only gem that gets referred to by their Japanese name (辰砂 ''shinsha''), although in the manga it's written in katakana as シンシャ.
* PlayingHardToGet: Cinnabar really just wants to become Phos' partner, but every time the latter Gem asks to, they drive them away. It also depends on what Phos ''really'' wants to do and the intentions behind their words (i.e. "I want you to work together with me [[spoiler:...so we can betray Kongou together]]"). No matter what, Phos doesn't have an easy time getting Cinnabar to directly cooperate.
* PoisonousPerson: Their body constantly releases a sort of poison that damages its surroundings and other Gems around them. Although the poison is not identified in-series, it is most likely mercury, as real cinnabar is the main ore of mercury.
** Which is also the reason why, unlike the rest of the gems, Cinnabar did not get a necklace in the ''Houseki no Kuni'' collaboration with TASAKI.
* ThePromise: Phos promised they'll find a job Cinnabar can do, and one that Cin will enjoy. Sadly for them, as Phos lost many parts of their body, they also seemingly forgot about this promise.
* ReassignedToAntarctica: Because Cinnabar is too dangerous to have around, Sensei reassigned the Gem to night duty, where Cin can roam around freely and observe if Lunarians will come, but at the cost of having the least interactions with the rest of the Gems and [[SnipeHunt ultimately fulfilling a useless role]], given that the Lunarians never attack at night.
* RefusalOfTheCall: Unexpectedly, Cinnabar outright refuses to go to the Moon when prompted by Phos.
* SatelliteCharacter: Most of their development and relevancy needs Phos to be present for it, and is otherwise not the focus of any chapter.
* ShipTease: Mainly with Phos.
* StaticCharacter: While many Gems at least have different developments going on in the story, Cinnbar and their situation largely stays the same for the duration of the story. It's supposed to contrast how much Phos has changed from their original self and intentions. However, they finally begin to get character development as of the Moon Arc.
* {{Tsundere}}: For Phos. One breath and they'll loudly complain or criticize Phos for being clumsy, useless, thoughtless, or insensitive-- and then in the next they'll be jealous of Phos and wish that they'd give them a new purpose.
* VoluntaryShapeshifter: To an extent, they can manipulate the poison from their body to create figures or copies of themselves.
* WalkingWasteland: Thanks to the poison which emanates from their body. Areas that Cinnabar uses it in can't be accessed for a while because of the dangers of it, and gems that come into to contact with the mercury have to get the parts that touched it taken off.
* WoobieDestroyerOfWorlds: Besides that sadness, it is actually true it could hurt or kill the Gems to even be around them.
[[/folder]]

[[folder:Diamond]]
!!Diamond
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/diamond_1.png]]
[[caption-width-right:300:[[TheHeart Beloved Idol.]]]]
[[caption-width-right:300:[[labelnote:Click here to see Diamond [[spoiler: after the 220 year time skip]]https://static.tvtropes.org/pmwiki/pub/images/dia1.png]]]][[/labelnote]]

-->'''Voiced by:''' Creator/AiKayano (Japanese), Savanna Menzel (English)

A model and idol for the Lustrous, and Bort's partner. Later partners up with Yellow Diamond.
----
* AffectionateNickname: Diamond, in the English translation, gets "Didi" from Bort.
* AlwaysSecondBest: In fighting, when compared to Bort. Despite both of them having hardnesses of 10, Dia will shatter easily if hit in the right place. It's sort of a touchy subject. [[spoiler:Their insecurities about this leads them to choose to go to the Moon with Phos.]]
* AttackAttackAttack: Dia's fighting style, which is very reckless.
* BigBrotherWorship: Really seems to adore Yellow Diamond.
* BishieSparkle: Constantly sparkles, and they're also considered the prettiest of all Gems. Even at night they shine brightly.
* ClothingDamage: Their PimpedOutDress is shredded by [[spoiler:Bort during their battle on Earth. However, this does nothing to slow Dia down.]]
* {{Cloudcuckoolander}}: Called "airy" by Benito when they lament that Dia and Yellow have been partnered together.
* CovertPervert: They express interest in seeing Cairngorm and the Prince sleeping together in the Lunarians' mineral oil. Cairngorm is highly embarrassed and denies them.
* CutenessProximity: To the Shiro plushie that Red Beryl stitched for them.
* TheCutie: Dia is a sweetie and loves cute things. The gem introductions at the beginning of each volume point this out constantly.
* EmotionsVsStoicism: The Emotional side of the conflict with Bort. Dia's problem with Bort stems from Bort's cold and strict attitude towards them coming off as being condescending.
* {{Foil}}: To Cinnabar. Despite being born in the same year, Dia is loved and popular, whereas Cinnabar is isolated due to their poison. Dia is also of harness 10, the highest hardness there is, while Cinnabar is a lowly 2. Dia treats Phos with straightforward kindness, whereas Cinnabar acts abrasively towards Phos.
* TheGadfly: Likes to tease Cinnabar about their infatuation with Phos.
* GlassCannon: They have high offensive power, but don't have the toughness needed to compensate for it and their body breaks easily when using their full strength.
* GreenEyedMonster: Towards Bort and their fighting capabilities, though Dia really wants to love them.
* GrievousHarmWithABody: [[spoiler: Beats Shiro by using their own torn off leg]].
* TheHeart: They're on good terms with all the gems [[spoiler: but their partner Bort]] and therefore does things like comforting Phos or relaying orders to Cinnabar.
* HighClassGloves: Wears opera gloves, like all the other diamond-class gems. Dia's gloves are white.
* ICanStillFight: Very prone to doing this, since Dia doesn't want to feel surpassed by Bort.
* IdolSinger: Becomes one [[spoiler:on the Moon]].
* InSeriesNickname: Dia.
* LoveFreak: Dia loves romance, and gushes when some romantic happenings go on.
* MulticoloredHair: Since diamond refracts light, Dia's transparent hair ends up becoming rainbow-coloured.
* OneSidedRivalry: Although Bort is aware of Dia's inferiority complex, Dia puts more stock into becoming the other Gem's equal or better while Bort shows no interest. [[spoiler:This is especially noticeable in their confrontation after the 220 year timeskip: Dia's grudge has been nursed for centuries, while Bort has let their anger and strictness go.]]
* PimpedOutDress: Their sleepwear is some of the fanciest and [[spoiler: upon going to the moon, they begin to wear one regularly.]]
* TheResenter: Resents Bort, seeing Bort as a braggart who enjoys lauding their superior skill over Dia through verbal abuse.
* ScreamingWarrior: [[spoiler: Against Shiro]].
* ShipperOnDeck: For Phos and Cinnabar. Also seems to enjoy watching [[spoiler:Cairngorm and Aechmea]].
* SmarterThanYouLook: [[spoiler:Despite being reckless and somewhat ignorant, Diamond is the first one to notice that Phos is telling white lies about the Moon and confronts them directly]].
* TaremeEyes: Befitting their gentle nature and sweet personality.
* TeethClenchedTeamwork: With Bort, if there even is a teamwork to begin with. Although they're both extremely capable and competent fighters, Dia hates how Bort keeps criticizing their fighting technique and finds Bort condescending.
* ThreeAmigos: With Bort and Yellow Diamond.
* TroubledButCute: Described as such in the volume 7 character introduction.
* TookALevelInJerkass: [[spoiler:Dia's become much more selfish on the moon. Where they would once assist any gem, they have to be coaxed into helping Phos, and over the time skip they have become much more murderous, their resentment for Bort growing into the urge to grind them into dust.]]
* UnknownRival: [[spoiler:After the 220 year time skip, Dia expresses their desire to fight Bort one on one. Bort's indifference to the affair sets Dia off.]]
* ZettaiRyouiki: Wears Grade A, like all the other diamond-class gems. Dia's socks are white.
[[/folder]]

[[folder:Bort]]
!!Bort
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/bort.png]]
[[caption-width-right:350:[[TheAce The Best Warrior.]]]]

-->'''Voiced by:''' Creator/AyaneSakura (Japanese), Creator/GenevieveSimmons (English)

The strongest of all gems, not counting Kongou-Sensei. Partnered with Dia and later with Zircon; was also briefly Phos' partner during the time when Sensei was asleep. Possesses the ability to not let damage spread to the rest of their body, which makes Bort near impossible to shatter.
----
* TheAce: Bort is a prodigy at fighting, and structurally, they are the strongest gem.
* AngerBornOfWorry: They get very peeved with Dia in their introductory chapter, but only because Dia decided to fight recklessly with a new style and a broken arm.
* AwLookTheyReallyDoLoveEachOther: While Bort is rarely openly affectionate with anybody, it's worth noting that they call Diamond "nii-chan" when things get serious-- a big sign that the Gem cares more than they let on. The English translation makes this more obvious by changing "nii-chan" to "[[AffectionateNickname Didi]]".
* AwesomenessByAnalysis: Is very analytical during battles against the Lunarians, and, as Phos discovers, and doesn't take risks. Bort also notices others' weaknesses, and doesn't shy away from pointing them out, which drove Dia away, as it made Dia feel like Bort was lauding their superior combat skills over them.
* BigDamnHeroes: Bort comes to the aid of the other gems in the nick of time at several points of the story.
* BlackAndWhiteMorality: Unflappable against opinions from enemy factions, which makes all of Phos' information regarding [[spoiler:Sensei's true purpose and function]] fall on deaf ears. [[spoiler:[[ProperlyParanoid This ends up being justified]], as not only are the Lunarians revealed to be {{Omnicidal Maniac}}s willing to destroy everything to enter the afterlife, but Phos becomes increasingly more like them as they suffer failure after failure while completely buying into what they say despite stating otherwise]].
--> "I don't trust what a Lunarian says!"
* BloodKnight: A battle maniac. Extra material says that they don't care about anything but fighting.
* BrutalHonesty: To Phos, regarding Bort's ability in battle or level of usefulness overall. Bort is also very blunt with pretty much anyone. Dia hates this part of them.
* CripplingOverspecialization: Bort is almost unable to be broken, but when they finally are broken [[spoiler:(their leg is cracked off by Phos)]] their fragments are too small to be used to repair them and their hair has to be used to plug the cracks instead.
* EmotionsVsStoicism: The Stoic side of the conflict with Dia. Bort is cold and InnocentlyInsensitive in their criticism of Dia, leading to Dia being hurt and distancing themselves from Bort.
* HalfTheManHeUsedToBe: [[spoiler:The end result of Bort's fight with Dia.]]
* HiddenDepths: Bort loves watching jellyfish and kept a journal of jellyfish breeding. [[spoiler:after the 200 year time skip, Bort gave up fighting and decided to tend to jellyfish.]]
* HighClassGloves: Wears opera gloves, like all the other diamond-class gems. Bort's gloves are black.
* ImprobableWeaponUser: Bort's hair is hard enough that the gem can use it to cut down enemies.
* InnocentlyInsensitive: Despite their trying to improve and criticize Dia's fighting ability, Bort had absolutely no idea how it was contributing to Dia's inferiority complex. [[spoiler:After the 200 year time skip, Bort's simple statement that they gave up fighting also triggered Dia's anger to a boiling point, causing them to go berserk.]]
* JerkWithAHeartOfGold: Part of the reason their relationship begins to falter with Dia is that while Bort might have good intentions, they have no interest in being kind or sugarcoating their words.
* MadeOfIron: One of the hardest gems, and the hits Bort can take don't spread to the rest of the gem's body.
* MasterSwordsman: The very best. [[spoiler:After losing their sword, Bort switches to using a whip.]]
* MellowFellow: [[spoiler:All of Bort's fighting spirit washed away over the centuries after the Lunarians stopped attacking. As a result, Bort's become a mostly calm Gem who just tends to the jellyfish.]]
* MrFanservice: Gets a lot of ass-shots in the manga when they're fighting in their summer uniform. Alternatively could be interpreted as [[MsFanservice Ms. Fanservice]] because of the ambiguous gender presentation of the gems.
* NotSoAboveItAll:
** The gem may be battle hardened and serious, but they aren't above CutenessProximity and very much love the jellyfish around the area, finding them cute. Their diary about jellyfish grooming is far more expressive than Bort externally is.
** They're seen visibly holding back laughter along with Jade and Dia when Ventricosus lands on Sensei's head.
** In the manga they blush slightly when Sensei pats their head.
** The Shiro incident basically turns Bort into TheComicallySerious [[spoiler:once the Lunarian turns back into its puppy like form]] which culminates in Bort's cracking due to [[spoiler:Yellow Diamond holding one of the Shiros]] from sheer shock.
* PrehensileHair: [[spoiler: Uses it as blades to cut Phos to pieces.]]
* TheQuietOne: Which makes Zircon very anxious when the young gem partners up with Bort for the first time.
* RapunzelHair: Bort's hair goes past the gem's ankles. [[spoiler:Not anymore after chapter 70.]]
* RavenHairIvorySkin: Has the darkest hair of all the gems.
* TheReliableOne: To the point that most other gems consider it meaningless to keep on fighting once Bort appears. Which ends up leading to TheWorfEffect in later battles, as Bort struggling to keep up with the higher level Lunarians that start appearing means trouble for the the rest of the gang.
* SempaiKohai: Has this with Zircon in later chapters.
* {{Sleepwalking}}: During winter, Antarc reveals Bort tends to dangerously wander around while asleep.
* TeethClenchedTeamwork: With Dia, if there even is a teamwork to begin with. Although they're both extremely capable and competent fighters, Bort finds it frustrating how Dia refuses to take any of their advice to heart.
* SpellMyNameWithAnS: Either goes by Bort or by Bortz depending on the translation.
* TakingYouWithMe: When Phos [[spoiler: manages to shatter their leg,]] they use their hair as blades to [[spoiler: cut Phos into pieces while Phos is distracted by Padparascha's sacrifice.]]
* TraumaticHaircut: [[spoiler: In the aftermath of the battle between Gems Bort's repairs to their body cost them nearly all of their hair.]]
* TheStoic: Normally very calm. Since Bort's mind tends to wander only when fighting is involved, other gems have difficulty noticing what Bort is thinking.
* ThreeAmigos: With Dia and Yellow Diamond.
* TsurimeEyes: Bort's eyes are noticeably sharper than others.
* WhipItGood: Trades their sword for a long whip later in the manga.
* ZettaiRyouiki: Wears Grade A, like all the other diamond-class gems. Bort's socks are black.
[[/folder]]

[[folder:Rutile]]
!!Rutile
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/rutile_9.png]]
[[caption-width-right:300:Legged Doctor.]]

-->'''Voiced by:''' Creator/YumiUchiyama (Japanese), Creator/ShelleyCaleneBlack (English)

The gem in charge of fixing the other gems. Partner of the sleeping Padsparadscha.
----
* CurbStompBattle: [[spoiler: Receives one from Padparadscha, the latter shattering them into little pieces.]]
* DeadpanSnarker: Especially with Phos.
* {{Determinator}}: Rutile refuses to give up on repairing Padparadscha. [[spoiler:When trying to persuade the Lustrous into going to the Moon/turning against Sensei, this is the first thing Phos preys upon while talking to Rutile]].
* DrJerk: Verily so, although Rutile does care about their patients.
* EmbarrassingNickname: Hates being called a Quack.
* EntitledToHaveYou: [[spoiler: Felt entitled to Padparadscha due to trying to repair the other gem for hundreds of years: There are sexual undertones to Rutile's repairs, the gem remarks it "feels good" to place their hands in Pad's holes. When Padparadscha is repaired on the moon, Rutile snaps and attacks Padparadscha, calling Pads "their own" before Padparadscha shatters them.]]
* FlechetteStorm: Being a doctor and not a warrior, [[spoiler: they introduce themselves to Padparadscha and Yellow Diamond by ambushing the pair with a flurry of sharpened scalpels, with more at their disposal.]] It happens again in Chapter 81, this time with Rutile using scalpels on Phos.
* ForScience: Very prone on acting like this.
* FreudianExcuse: Started studying medicine due to wanting to find a way to heal Padparadscha.
* JapaneseDelinquents: Called themselves a delinquent before they began learning medicine to heal their partner [[spoiler:and returns to being a rude, angry person after Padparascha was taken]]. Of course, Japan doesn't actually exist anymore at this point, so Rutile only resembles one in spirit.
* {{Keigo}}
* IfICantHaveYou: Rutile [[spoiler: attempts to shatter Padparadscha when they see Padparadscha is awake because Rutile wants to be the only one to repair them.]]
* LabcoatOfScienceAndMedicine: Wears one to signify the role of a doctor.
* MadScientist: Remembered as one by the Admirabilis, who consider Rutile to be a terrifying monster.
* MarriedToTheJob: It helps that said job is also a means of fulfilling the promise made to their sleeping partner.
* TheMedic: In charging of healing and maintaining the health of the Lustrous. [[spoiler:It's part of the reason why, ultimately, Phos decides not to give them the choice to go to the Moon]].
* MulticoloredHair: Red and golden.
* ThePromise: Promised to heal Padparadscha. Rutile's been working on this for hundreds of years. An omake shows that they even sometimes wake up in the middle of hibernation thinking about new ways to fix Padparadscha.
* SanitySlippage: [[spoiler: After Phos took Padparadscha to the moon, Rutile slipped off the edge, no longer grooming themselves and behaving more and more unhinged as chapters progress.]]
* SecretlySelfish: As much as Rutile wants to permanently awaken Padparascha, we learn over time that the sentiment is less "I want to fix Pad" and more "''I'' want to fix Pad". They admit to Phos that they feel like it's a job they want to be able to finish to completion, and Yellow Diamond even points out that [[spoiler:Padparadscha being awake at all following the Moon trip]] should be a joyous occasion, but Rutile [[spoiler:aims for the new filled holes when attacking and only mutters "mine" as they're bifuricated in battle.]]
* SeriouslyScruffy: [[spoiler: As of Phos taking Padparadscha to the moon, Rutile has snapped completely, not doing up their hair and leaving it limp and obscuring most of their face. They also don't bother to put on powder in later chapters.]]
* ShesGotLegs: Known for their slender, pretty legs, and wears a nice pair of kitten heels to fit.
* SlipknotPonytail: Although it's not exactly a ponytail, Rutile's hair comes out of its usual singular neat curl when they jump out of a window in their rush to the infirmary after their realization that [[spoiler:Phos has taken Padparascha]].
* TalkingInYourSleep: Tends to chatter while asleep about repairing Padsparadcha.
* ThisIsUnforgivable: Is absolutely ''pissed'' at Phos for [[spoiler:taking Padparadscha to the Moon]]. Part of it is betrayal, but part of it was also because Rutile wants to bring Pad back with their own two hands. Phos [[spoiler:taking Pad away under their nose]] denies the Gem that. They are still upset with Phos when we see them in chapter 77.
* TightsUnderShorts: Though with the flared shorts of the summertime outfit, they sometimes look more like ProperTightsWithASkirt. Either way, Rutile's tights add to their prim and professional demeanor, as well as doing a nice job of highlighting their legs.
* TranquilFury: [[spoiler: They are ''not'' happy over seeing the fixed Padparadscha again, letting their tools of trade speak for them instead.]]
[[/folder]]

[[folder:Padparadscha]]
!!Padparadscha
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/padparadscha.png]]
[[caption-width-right:300:The Sleeper.]]
[[caption-width-right:300:[[labelnote:Click here to see Padparadscha [[spoiler: after coming back from the moon.]]https://static.tvtropes.org/pmwiki/pub/images/pads1.png]]]][[/labelnote]]

-->'''Voiced by:''' Creator/RomiPark (Japanese), Creator/ChristinaKelly (English)

Rutile's partner. Was born incomplete, with holes all across their chest. Padparadscha thus spends most of the time sleeping, while Rutile tries to fix them. One of the oldest gems.
----
* TheAce: Implied to be this even with their condition. Padparascha is regularly looked up to by younger Gems, is strong on their own right, and a very good fighter. During the night raid, they effortlessly and wordlessly slash [[spoiler: three other gems to pieces after shattering Rutile.]]
* AdvertisedExtra: Weirdly, they was right up front in [[http://1.bp.blogspot.com/-sfZe_jq7T2E/V_bI7n5ayqI/AAAAAAC_ClM/E3YGLnE2b2g/w1900/MR-27194-468487-4.jpg the second row of the first volume's table of contents]], in front of even Jade and Euc. Although such forward placement would usually signify a big role in the story, Padparadscha has only been seen awake in one chapter, in chapter 29 of volume 5. Their appearances after that have been limited to shots of them lying asleep in their casket. [[spoiler: A whole 34 chapters later, Padparadscha is awake again as their holes have been filled with synthetic versions of their gem after being taken to the moon by Phos. Whether or not this will keep them awake permanently has yet to be seen.]]
* AndShowItToYou: Invoked when they [[spoiler:take out one of their Lunarian fillings, which is effectively keeping them conscious, and tosses it to Rutile]].
* AwfulTruth: Implies that the truth about Sensei is this to Phos during their talk.
* {{BFS}}: [[http://2.bp.blogspot.com/-jUh1QMssHEw/V-Jou1OYfnI/AAAAAACIPhQ/UjbldnUQT1g/w1900/MR-27194-653529-21.jpg The sword they use when they're not dead asleep seems to be bigger than their body]].
* CurbStompBattle: [[spoiler: Shatters four gems in three strokes of their sword.]]
* ConvenientComa: [[spoiler: After the night raid, Pad had their fillings removed while the Lunarians put the gem in a solution to recuperate. Pad had been under for 220 years before [=New!Goshe=] woke them up.]]
* DeathSeeker: Tells Phos that they're considering telling Rutile to give up in trying to fix them, as Padparadscha doesn't want to keep bothering Rutile. Like with everything else, Padparadscha seems pretty relaxed with the prospect of never waking up again. [[spoiler:It is this confession that leads to Phos taking Padparadscha to the moon with them without Rutile's knowing]]. However, once [[spoiler: the Lunarians heal them, Padparascha seems happy to be awake and alive.]]
* DeepSleep: In a constant state of this due to the gem missing parts of their body.
* DoesNotKnowHisOwnStrength: Padparadscha [[spoiler: accidentally shatters Phos's face just trying to get their attention.]]
* EvilCostumeSwitch: [[spoiler: Gets a new revealing outfit from the Moon People.]]
* FashionableAsymmetry: One of their [[ZettaiRyouiki thigh socks]] falls loosely over their calf, adding to their overall disheveled look. No point in putting effort into your appearance when you're only awake in hour-long intervals every few centuries.
* HandicappedBadass: Padsparadscha, a gem born with holes inside their body that forces them to hibernate longer and longer, is still one of the best fighters bar none when awoken. As Phos recalls, with a "hardness of 9 and excellent toughness", Padparadscha was the second strongest gem after Bort. [[TruthInTelevision In real life]], corundum gems (that is, ruby, sapphire, and padparadscha) are the hardest gems on the Mohs scale after diamonds. Even after losing a huge chunk of their memory, Phos is able to recall Padparadscha, and thinks of them as "cool".
* HeroicSacrifice:
** [[spoiler: Throws Phos out of danger with their sword rather than getting out of the way of Cinnabar's mercury and takes a direct hit to the face.]]
** After the [[spoiler:220 year time skip, the first thing they do is go to Earth and rip a piece of themselves out to distract Rutile, who'd been about to grind what was left of Phos into dust and throw them into the ocean.]]
* HighClassGloves: In the anime, they're shown to wear white Opera gloves with their summer uniform.
* [[IllGirl Ill Gem]]: The closest thing this series has to one. Since Padparadscha was born with large holes in their body, Rutile is constantly trying to find the right materials to keep them awake. In the meantime, Padparadscha sleeps in a casket in the infirmary, always close to Rutile.
* MessyHair: Maybe the messiest of them all.
* MentorArchetype: They keep Phos sane and on task [[spoiler:when they're on the Moon]], offering plenty of advice.
* MentorOccupationalHazard: [[spoiler: Immediately protects Phos in a HeroicSacrifice on their first Earth mission after going to the moon. While Pads was shown to be ''alive'' after the battle, they were critically injured and required emergency surgery to remove the mercury from their body and were kept asleep for the entirety of the time skip.]]
* MsFanservice: Not to the same extent as Bort, but their relevant roles so far have had them walking around with [[WalkingShirtlessScene an open shirt]] with their shorts hanging low enough to see their V-line and [[spoiler: in Chapter 63, after their operation to have their holes filled with synthetic Padparadscha, we're treated to a gratuitous shot of their butt in a thong as they go to speak with Phos.]] Alternatively could be interpreted as MrFanservice because of the ambiguous gender presentation of the gems.
* OldSoldier: One of the oldest gems, along with Yellow Diamond.
* ParryingBullets: [[spoiler: Parries Rutile's ambush FlechetteStorm of scalpels with a moon sword when they and Yellow Diamond come back to Earth.]]
* ThePromise: Rutile promised centuries ago to heal the gem.
* RapunzelHair: A bushy mane down to their ankles.
* RedOniBlueOni: The blue to Phos's red, they encourage Phos to calm down and logically go about figuring out how to [[spoiler: repair Sensei]] rather than [[spoiler: smashing him.]]
* SecretKeeper: Heavily implied to know about Kongou-Sensei's past. Too bad they can't stay awake long enough to tell Phos. Assuming the gem would ever say anything.
* TakingTheBullet: [[spoiler:Gets a face full of mercury pulling Phos away from Cinnabar's attack.]]
* ThrowingTheDistraction: [[spoiler:They toss a piece of themselves at Rutile to distract Rutile from trying to crush Phos in Chapter 81.]]
* UndyingLoyalty: Professes it to [[spoiler: Phos after the gem brings them to the Moon and seemingly cures their affliction.]] This extends to [[spoiler: shattering Rutile and three other gems, as well as performing a HeroicSacrifice for Phos.]]
* WalkingShirtlessScene: No point in closing your shirt when your torso is so full of holes all the time. [[spoiler:Even when getting a new uniform from the Lunarians, they make sure to emphasize the gem's torso by cutting a huge hole in the middle.]]
* ZenSurvivor: Very old, and like Yellow Diamond, they gives off this vibe. Whereas Yellow has survived for so long because of their speed, however, Padparadscha seems to have survived because they're constantly asleep. [[spoiler: They are also shown to be highly competent in battle, taking out four gems with two slashes of their sword.]]
* ZettaiRyouiki: Grade B.
[[/folder]]

[[folder:Jade]]
!!Jade
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/jade.png]]
[[caption-width-right:300:Unmovable Judge.]]

-->'''Voiced by:''' Creator/AyahiTakagaki (Japanese), Heidi Hinkle (English)

Prolocutor/Judge of the Lustrous. Sensei's main assistant and Euclase's partner.
----
* ApologeticAttacker: Against Phos when Jade has to break the gem with a well placed punch during one of Phos' psychotic attacks.
* BoringButPractical: How Phos describes Jade as a fighter. Jade has a good toughness level which makes them difficult to break but has an average hardness level.
* TheLeader: Acts as a leader and judge while Kongou Sensei is not present.
* MiddleManagementMook: Acts like this for the other Gems.
* NotSoAboveItAll: Despite the stern and tough image, Jade does have their moments of silliness. They try to punch Kongou awake and screams over exaggeratedly when they break their hand. They also have a not so subtle range of expressions.
* RedBaron: The Unmovable Judge/Chairman.
* SexySecretary: Jade's role, along with Euclase.
* TheStrategist: One of them, along with the gem's partner Euclase.
* ZettaiRyouiki: Grade C.
[[/folder]]

[[folder:Euclase]]
!!Euclase
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/euclase_3.png]]
[[caption-width-right:300:Lustrous Secretary.]]

-->'''Voiced by:''' Creator/MamikoNoto (Japanese), Serena Varghese (English)

Secretary for the Lustrous, as well as Jade's partner.
----
* AffectionateNickname: Euc.
* BigOlEyebrows: Has thicker eyebrows than the rest of the gems.
* DissonantSerenity: Is rather laid back about everything, like the giant slug or needing to wake Sensei up to fight the Lunarians.
* JackOfAllStats: Considered Euc's role, as the gem is good for anything.
* KaleidoscopeHair: As seen in the volume 6 omake, the colors of Euc's hair move around of their own accord due to changes in atmospheric pressure, and the coloring can be used to predict the weather. [[CurtainsMatchTheWindow Euc's eyes]] also change color along with their hair.
* TheLeader: Very subtle, but, being the main tactician for the gems, it's clear they make the calls when Sensei isn't available, though in a more subdued way than Jade. [[spoiler: After Sensei steps down from the position of leadership, Euclase is the one that approaches him and starts trying to negotiate for equality between the gems and Kongo.]]
* MismatchedEyes: One blue, one silver, just like their hair.
* MulticoloredHair: Half blue, half silver.
* NiceGuy: Especially in contrast to Jade's toughness.
* OlderThanTheyLook: Is actually much older than Jade. Cairngorm refers to him as an elder from the same age of Yellow Diamond and Padparascha.
* OnlySaneMan: They're the only Earth gem who wants to talk to Phos and try to figure out what's happening [[spoiler:when they take other gems to the moon and beg Sensei to pray again.]] Unfortunately, since the other gems overrule them, nothing comes of this.
* RightForTheWrongReasons: Euclase has every right to be suspicious of Phos after [[spoiler:the gem came back from the Moon and started giving off all the information they knew]], but the reason Euclase is worried is because the gem thinks Phos is either an impostor or has been taken over by [[spoiler:Lapis]].
* SexySecretary: Euclase's role, along with Jade.
* SpannerInTheWorks: Ruins Phos's plans to [[spoiler: take other gems to the moon]] by tipping the other gem off to the fact that they suspected Phos.
* TheStrategist: One of them, along with the gem's partner Jade.
[[/folder]]

[[folder:Yellow Diamond]]
!!Yellow Diamond
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/yellowdiamond.png]]
[[caption-width-right:300:Eldest Sibling.]]
[[quoteright:300:[[labelnote: Click here to see Yellow in [[spoiler: their moon outfit.]]https://static.tvtropes.org/pmwiki/pub/images/yellow1_4.png]]]][[/labelnote]]


-->'''Voiced by:''' Creator/JunkoMinagawa (Japanese), Allison Sumrall (English)

The oldest active gem, partner of Zircon and later Diamond. Very carefree; is also the fastest of all gems.
----
* BrokenAce: They are very capable in combat and are the fastest gemstone, but their mental state is fragile due to having lost so many of their partners. This only worsens as time progresses, with [[spoiler:Yellow becoming near completely broken after the moon raid.]]
* BrokenBird: [[spoiler:As of the second time skip, Yellow is shown to be mentally broken, believing themselves to be a Lunarian and growing depressed when they are reminded of their true identity.]]
* BrokenPedestal: Considers themselves to be one to Zircon.
* BigBrotherInstinct: To the other gems at times.
* {{Cloudcuckoolander}}: Benito calls both Yellow and Dia too "airy" to partner with each other.
* CoolBigSis: Is the oldest gem of them all. All the other gems look up to them.
* DeadPartner: Has had four of their partners taken to the moon, which Yellow blame themselves for.
* DeathSeeker: Suggests they want to fall asleep forever (like Padparadscha) or get taken to the moon, having grown tired of life.
* DespairEventHorizon: The Night Raid took a lot out of the Gem. Upon returning to base, they haven't moved an inch and constantly claim that they're exhausted, with the rest of the Gems there looking after them.
* DrivenToSuicide: [[spoiler: Attempts to kill themselves on the Moon by throwing themselves off a building.]]
* FreakOut: [[spoiler: Quickly begins to panic after their mission does not go as planned upon arriving back on Earth.]]
* HeroicBSOD:
** [[spoiler:Upon learning the ultimate fate of the captured gems on the moon--getting ground into a fine dust and spread all over the surface--Yellow's reaction is to fall to their knees in despair and start ''literally'' falling apart.]]
** [[spoiler:Yellow also takes the night raid the hardest, becoming sullen and distant to the point of not joining the rest of the Moon Gems in recent activities. This seems to have lasted 200 years, as the gem is still mentally broken after the time skip.]]
* HighClassGloves: Wears opera gloves, like all the other diamond-class gems. Yellow's gloves are a yellowish-gray.
* InSeriesNickname: The other gems refer to them as " Yellow " when they aren't calling them " Elder Brother ".
* ItsAllMyFault: Blames themselves for having lost four partners to the Lunarians.
* IWantMyBelovedToBeHappy: A platonic version. [[spoiler: Yellow Diamond decides to let Zircon partner with Bort, understanding that Zircon was being held back from their true potential by partnering with Yellow. Under Bort, the other gem could flourish.]]
* MoreThanMindControl: [[spoiler:Aechmea tells the Moon Gems that Sensei has the ability to make all the being around him love him, which is the case for the Lunarians as well. Yellow can't reconcile this idea, still having lingering feelings for their old master and not wanting to fight him.]]
* OldSoldier: One of the oldest Gems.
* PerpetualSmiler: Seems to be always happy [[spoiler: at first.]]
* PimpedOutDress: Gets one as part of their [[spoiler: moon outfit.]]
* SanitySlippage: [[spoiler: As of chapter 79, Yellow believes they are a Lunarian and seems to have lost their mind completely during the TimeSkip.]]
* SecretKeeper: Like Padsparadcha, [[spoiler: Yellow is heavily implied to know about Kongou-Sensei's past. It's also probable that Yellow was spying on Phos as the gem investigated about the Lunarians]].
* SempaiKohai: With Zircon, and the rest, being the eldest sibling.
* SexyBacklessOutfit: [[spoiler:After joining the Lunarians, they get this.]]
* StepfordSmiler: As Yellow's own self-disgust reveals.
* SuperSpeed: The fastest of the Lustrous until Phos gets a leg upgrade. They consider this to be the only reason they haven't gotten captured by the Lunarians yet, even though all their previous partners had.
* TheTease: Very prone to this.
* ThreeAmigos: With Bort and Diamond.
* VocalDissonance: According to some fans of the series, Yellow Diamond's surprisingly deep and masculine voice in the Anime adaptation is this due to their somewhat feminine appearance. Given Yellow Diamond's status as a CoolBigBro to the other gems, it can be seen as fitting.
* ZenSurvivor: Acts like this to all the other Gems.
* ZettaiRyouiki: Wears Grade A, like all the other diamond-class gems. Yellow's socks are a yellowish-gray.
[[/folder]]

[[folder:Zircon]]
!!Zircon
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/zircon_4.png]]
[[caption-width-right:350:Talented Youngster.]]

-->'''Voiced by:''' Creator/HimikaAkaneya (Japanese), Creator/BrittneyKarbowski (English)

The second youngest gem after Phos, and a gem of great talent. First partners up with Yellow Diamond before going with Bort.
----
* TheBabyOfTheBunch: Especially after Phos matures, and Zircon is relegated to being treated as the youngest again.
* BigDamnHeroes: [[spoiler: Does this with Bort and Tourmaline to save Phos, Peridot, Sphene and Cairngorm from the Pieces]].
* ChildProdigy: Really young, but talented enough to be paired with great fighters like Yellow Diamond and Bort.
* DevotedToYou: {{Deconstructed}} with their relationship with Yellow Diamond. Zircon is fiercely loyal and dedicated to protecting their partner but, as Bort points out, because of this Zircon has let their skills stagnate and hasn't allowed themselves the opportunity to really test their own mettle in combat, instead only worrying about protecting Yellow. Therefore Zircon is partnered off with Bort in order to learn how to be a more effective warrior.
* NaiveNewcomer: Sort of idealistic and still has a lot to learn.
* OffWithHisHead: Loses their head the first time they're seen in the manga, though Yellow is able to help Rutile repair them.
* SempaiKouhai: With Yellow Diamond and later Bort.
* TakingTheBullet: For Yellow Diamond. But since Zircon doesn't get captured, they both survive.
[[/folder]]

[[folder:Antarcticite]]
!!Antarcticite
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/antarcticite.png]]
[[caption-width-right:350:The Winter Guardian.]]

--> '''Voiced by:''' Creator/MariyaIse (Japanese), Alyssa Marek (English)

Phos' first partner. They are the Winter Guardian, in charge of protecting the gems during their hibernation. The colder it gets, the harder the Gem becomes.
----
* AnIcePerson: Quite literally, as without the cold they're so soft they become a puddle. The colder the temperature, the harder they become. This makes them especially useful in Winter, where everyone else rests.
* TheAloner: Unlike Cinnabar who is forced into solitude, their annual cycle makes the rest of the gems barely a part of their life, Kongou-sensei being the only exception. Their character bio describes them as acting "like an only child".
* AstonishinglyAppropriateAppearance: The Winter Guardian has a name based off of one of the coldest places in the world, and is dressed head to toe in pure white clothes.
* BathtubScene: Antarc is first introduced rising out of a tub of liquid in the wintertime, firming up from the frigid air. The liquid Antarc comes out of? All of that is Antarc too.
* BerserkButton: Just the possibility of forgetting Sensei puts them into a frenzy.
* {{BFS}}: Wields a huge serrated-edge hatchet for breaking up ice floes. They even use it to [[https://www.youtube.com/watch?v=T1DtKgEX2Kg snowboard]].
* CombatStilettos: Wears heels that act as ice picks and help with the breaking of the ice.
* CustomUniform: Wears a white version of the normal suit most Gems wear. The suit seems to be designed to give them a measure of camouflage in the snow from the Lunarians.
* DeaderThanDead: While the possibility of some gems returning from being [[spoiler:ground into dust]] is possible, Antarcticite [[spoiler:was specifically said to be deader than dead, as any dust with a hardness lower than 5 has likely flown off the moon as a result of asteroid impacts, making Antarc's pieces impossible to recover.]]
* DeadPartner: To Phos. They are as dead as they can be.
* GlassCannon: As shown when they fight: having even less hardness than Phos, they crack and break over literally nothing; but despite that they are able to crush Lunarians and blow up half of the Vessel Main figure in one swing of their sword each, and to split the rest of the New Model in half just by pulling it with their hands.
* GoOutWithASmile: As they shatter into pieces before being collected, they gives Phos a smile, [[LastRequest tells the Gem]] [[TakeUpMySword to take care of the Winter duties]], and advises them to not leave Sensei lonely.
* HeroicSacrifice: Gets captured in order to save Phos.
* KilledOffForReal: Captured to save Phos, and [[spoiler: cannot be revived, as they have likely been worn away into invisible particles by now.]]
* TheLostLenore: Becomes this to Phos after they are broken and taken to the Moon. Phos' mental state and actions over the course of the story have a ''lot'' to do with their guilt over not saving Antarc when they believe they could have.
* MemeticHandGesture: Their most iconic pose is them raising their index finger to their lips. They did it a couple of times across the Winter arc, even [[spoiler:before they're shattered and brought to the moon]].
* TheMentor: Of a sort to Phos during the Winter Arc. [[MentorOccupationalHazard Which can only mean one thing]], considering the danger of the Winter arc...
* NotSoAboveItAll: Becomes really embarrassed once Phos caught them asking Sensei for a hug, and later breaks down over the loss of Phos's arms, crying to Sensei and admitting they don't know how to deal with failure.
* PassingTheTorch: Saves Phos as to not to leave Sensei alone during the Winter Watch.
* PeekABangs: One of their eyes is constantly covered by their hair strand and bangs, at all times.
* TheReliableOne: It says a lot that the Gems consider themselves safe with only them and Sensei watching over them all during the winter.
* ReverseArmfold: Usually stands in this position.
* TheStoic: Seems to be a rather serious individual.
* SempaiKouhai: With Phos, until Antarc's capture.
* SerratedBladeOfPain: Their weapon, which Phos later inherits for a while. It helps with their ice-cutting.
* SmallRoleBigImpact: Despite showing up for only one arc, Antarc's relationship with Phos and [[spoiler:getting taken to the Moon]] ends up affecting Phos for the rest of the series, and not in a good way.
* SugarAndIcePersonality: Sweet and affectionate towards Sensei but stoic and aloof to everyone else.
* VetinariJobSecurity: By the beginning of the story, and until Phos gets their upgrades, they are-- along with Sensei-- literally the only thing standing between the Moon People and the hibernating Gems during winter.
[[/folder]]

[[folder:Ghost Quartz]]
!!Ghost Quartz
[[quoteright:176:https://static.tvtropes.org/pmwiki/pub/images/ghost_6.jpg]]
[[caption-width-right:176:Library Ghost.]]

A gem in charge of the Library and the Hibernation Chambers. Briefly becomes Phos' second partner. Formed over another gem, and so has a SplitPersonality that sometimes influences them.
----
* BadassBookworm: In charge of the Library after Lapis Lazuli's kidnapping and a a very capable fighter when they really try.
* DeadPartner: Lapis. Then Ghost becomes a second one to Phos and Cairngorm.
* DeathOfAThousandCuts: Not exactly dead, as per the Gems immortality, but this is how they get peeled off and captured by the enemy.
* ExtremeDoormat: Their personality overall. They are not unfazed at all with criticism.
* GoLookAtTheDistraction: Throws their own arm at the Lunarians to save Phos' lower half from them.
* HeroicSacrifice: Gets peeled off Cairngorm in an amazing fashion while protecting a broken Phos.
* HeroicSelfDeprecation: Considers themselves to be far beneath Lapis both in Library work or fighting.
* ItsAllMyFault: Averted. They put the blame of Lapis' capture on Cairngorm, and Cairngorm agrees.
* LastRequest: As Ghost gets stripped away from Cairngorm, the former asks the latter to protect Phos at all costs. [[spoiler:Aechmea theorizes that it's less a "request" followed and more "psychological compulsion", given that Ghost's inclusions supposedly still resided in Cairngorm's eyes.]]
* LeeroyJenkins: Mostly because Cairngorm influences them from the inside, they tend to jump against the Moon People without a second thought.
* TheLostLenore: Lapis Lazuli.
* MeaningfulName: The gem that tends to startle everyone and just seems to appear out of thin air is called Ghost.
** In their brief cameo [[spoiler:in Cairngorm's head while on the Moon]], they appear as a ghost-like figure that haunts [[spoiler:Cairngorm]].
* ReiAyanamiExpy: A troubled, [[EmotionlessGirl subdued gem]] with silver hair who becomes more emotional due to a crippling injury (being peeled off of Cairngorm, their more emotional personality).
* SugarAndIcePersonality: Comes off as creepy and subdued at first, but shows warmth and devotion to Phos once they spend time together.
* TalkingToThemself: While talking to their inner Gem.
* SinisterScythe: Their weapon of choice.
* SpinToDeflectStuff: Pulls this move on the Moon People arrows with their scythe. Subverted perhaps in that it is not a good enough move and they get shaved off of Cairngorm.
* SplitPersonality: Has one with Cairngorm due to forming on top of them. [[spoiler: As shown when Ghost is pulled away from Cairngorm, Ghost was not fond of the other gem and blamed them for multiple failures.]]
* StealthHiBye: They are very prone to doing this, and thus is how they named them. The other Gems, including Phos, tend to not notice their presence.
* TeethClenchedTeamwork: With Cairngorm, the other gem inside them. While Ghost was usually in charge of their body, Cairngorm's impulsive tendencies would often put them in danger and in Ghost's eyes lost them their partner, Lapis. Ghost resented Cairngorm for this loss and as their LastRequest demanded they protect Phos at any cost.
* TheSymbiote: With Cairngorm, as they formed over it.
* UndyingLoyalty: To Phos. Ghost states they will do anything for Phos, and eventually allows themselves to get pulled off of Cairngorm to save Phos's life.
[[/folder]]

[[folder:Cairngorm]]
!!Cairngorm/[[spoiler: Princess]]
[[quoteright:140:https://static.tvtropes.org/pmwiki/pub/images/cain.jpg]]
[[caption-width-right:140:Jerk With A Heart [[JerkWithAHeartOfGold (of Gold)]].]]
[[caption-width-right:140:[[labelnote:Click here to see Cairngorm [[spoiler: as the Moon Princess]]https://static.tvtropes.org/pmwiki/pub/images/cairn1_1.png]]]][[/labelnote]]

The gem that Ghost formed over. They are in charge of the Hibernation Chambers where the pieces of recovered gems are kept, the Library and later becomes the Winter Guardian in absence of Phos. They are also Phos' third partner. Later [[spoiler: they become the Princess of the Moon as Aechmea's wife.]]
----
* OneHundredPercentAdorationRating: The Lunarians adore Cairn [[spoiler:as the Princess]], seeing the Gem as a cute, polite, and loyal [[spoiler:wife to Aechmea]].
* AnArmAndALeg: Cairngorm's left arm is always coming off. The original arm was taken off just before Ghost sacrificed themselves, so they have it replaced with smoky quartz later. It comes off a second time, which leads to Phos [[spoiler: losing their head]] when they try to retrieve it. [[spoiler:Following their FreakOut, the arm comes off yet again and the gem has it replaced with artificial Cairngormite. Unlike other times when Gem parts are replaced, Aechmea mentions that it needed glue and a cast to set, meaning it doesn't quite sync up with the rest of the body.]]
* BerserkButton: Gets very angry when someone questions their decisions [[spoiler: due to their insecurity over their lack of autonomy.]]
* BodyMotifs: Arms. Cairngorm doesn't have their inclusions take to other materials well, so their left arm is always in focus during important scenes.
* {{BFS}}: Like Antarc, Cairngorm uses a serrated blade when they take over the winter shift.
* BrutalHonesty: Very prone to just flat out stating the truth, including to Sensei on regards of the possibility of gems actually coming back from the Moon.
* CombatStilettos: Like Antarc and Phos before, Cairngorm wears heels as part of their outfit for the winter shift.
* CustomUniform: Wears a white uniform like Antarc once they take over the winter shift. It helps hide them in the snow from the Lunarians.
* DeadpanSnarker: Might be better than Rutile at this.
* DeathSeeker: [[spoiler:Apparently, while Phos was unconscious for those 102 years, Cairngorm wanted nothing more than to die. The Gem also had a habit of listening to the ice floes during Winter. They've gotten better, but their desire to go to nothingness with the rest of the Lunarians is also this.]]
* DeclarationOfProtection: Vows to keep Ghost's word and keep Phos from harm. [[spoiler:According to Prince Aechmea, the main reason they even do this is because a small fraction of Ghost's inclusions supposedly resides in their eyes.]]
* DubNameChange: Called "Morion" in the French translation.[[note]]Morion is a type of smoky quartz[[/note]]
* EveryoneCallsHimBarkeep: Post timeskip, Cairngorm most often goes by [[spoiler:Princess.]]
* EvilCostumeSwitch: [[spoiler: Wears a PimpedOutDress and a veil after joining the Moon People.]]
* FantasticRacism: Very spiteful and hateful of the Moon People. [[spoiler:Gets over it very quickly once their eyes are replaced.]]
* FaceHeelTurn: [[spoiler: Joins the Lunarians and commands a legion of them to rescue the moon gems.]]
* {{Foil}}: To Antarcticite. Both are Phos' major partners, but they eventually lay on opposite sides of the conflict; Antarc favors and follows Sensei, while Cairngorm does the same for [[spoiler:Aechmea]]. The gem collection art book makes them parallel each other even less subtly, with both of their busts propped up by the affectionate hand of their mentor.
* FourthDateMarriage: Although the exact time frame of the relationship is never mentioned, some Gems have commented on how fast Cairngorm and [[spoiler:Aechmea]] took to each other, culminating in a "purely" political marriage to signify the Gem/[[spoiler:Lunarian]] alliance.
* FreakOut: [[spoiler: Starts falling apart when the Prince tells the gem Ghost Quartz has been forcing them to protect Phos through inclusions in their eyes.]]
* FriendshipDenial: The gem had done it several times before, claiming that all the things they do for Phos is out of obligation and not because they're actual friends.
* GildedCage: For all of the Gem's talk about being independent of Ghost, Cairngorm [[spoiler:as the Moon Princess]] is still in many ways restricted. They get whatever they ask for material wise and [[spoiler:the Lunarians]] always try to accommodate them, but they can't do anything without [[spoiler:Aechmea]]'s say so and the one time the Gem ''did'' go off on their own, [[spoiler:Aechmea]] was furious.
* GirlinessUpgrade: [[spoiler: After siding with the Lunarians, with this becoming Cairngorm in both appearance and personality due to Aechmea's influence. They're even more this trope, being the first gem to be gendered (as female, in this case) by the Lunarians, though it's doubtful that Cairngorm even fully comprehends the concept of femininity.]]
* HairTriggerTemper: Ghost described the gem as somewhat reckless and violent when ticked off. When Cairngorm is finally shed of Ghost, we see it immediately, punching Phos three times because they blamed the other gem for everything going wrong.
* HappilyMarried: [[spoiler: To Aechmea, as seen following the 220 year time skip.]]
* HiddenDepths: They really like feminine clothing, as we learn on the Moon. As for why they never spoke up about it, see WhatWouldXDo below.
* HugeGuyTinyGirl: [[spoiler:Aechmea]] positively towers over Cairngorm, with the Gem coming up to at least his waist.
* {{Hypocrite}}: Reprimands Phos for taking Prince's words at face value, yet [[spoiler:falls for his words and joins the Lunarian side after one conversation with him]].
* IdenticalStranger: According to Phos, they look just like Antarc save for the black skin and shorter hair. After they finally put on powder and wears the white CustomUniform Antarc was usually seen wearing, the similarities become more apparent.
* IJustWantToBeFree: Despite caring for Ghost, Cairn screams that they want to be free from Ghost's influence when they're told that [[spoiler:Ghost is still influencing them through their eyes]]. They had hardly been their own person until Ghost was chipped off of them, so they have subconscious fears of their new identity being stripped away.
* InterspeciesRomance: [[spoiler: With Aechmea, a Lunarian. Perhaps downplayed as both species were originally descended from humans.]]
* ItsAllMyFault: Entirely agrees on this regarding Lapis being captured while talking with Ghost. [[spoiler:They appear to get over it upon replacing their eyes.]]
* JerkassHasAPoint: While they were pretty harsh in explaining themselves and fully distancing themselves from their time on Earth, Cairngorm does bring up a good point; Phos needs to be more in tune with how the people around them feel about their plans, not just make everyone follow their lead.
* JerkWithAHeartOfGold: While they initially hated Phos and pushed all the blame for the gem being taken to the moon on them, Cairngorm thought of offering their own head at one point just to save Phos, and still frequently tries their best to be a good partner for them.
* TheLastOfTheseIsNotLikeTheOthers: Mostly doesn't wear powder, shorter than the rest, and [[spoiler:completely embraces Lunarian culture, changing their name and happily enjoying a romantic relationship]] unlike every other Gem.
* LeeroyJenkins: Just like their previous incarnation.
* MasterActor: According to Phos.
* MeaningfulRename: Twice; first from Ghost to Cairngorm, then later [[spoiler: rejects the name Cairngorm and takes on the name Princess.]]
* MindControl: Cairngorm is told that they're being compelled by [[spoiler:Ghost Quartz's memories, located in their eyes, to protect Phos at any cost.]]
* MistakenIdentity: During the Night Raid, many Earth Gems mistook Cairngorm for a small Lunarian, due to their center position and their dress concealing their identity. Better seen in the volume 9 redraws, where Cairngorm is intentionally kept vague looking throughout their screentime that chapter.
* MsFanservice: As of the Moon Arc [[spoiler: they most often go around in undergarments and [[PimpedOutDress Pimped Out Dresses]], veering heavily towards revealing feminine clothing.]]
* TheNapoleon: The smallest gem of all and one of the most irritable and violent.
* NonStandardCharacterDesign: Upon their introduction and [[spoiler: after going to the moon and deciding to stop wearing powder,]] Cairngorm has black skin and white hair unlike the white skinned gems. Cairngorm is also explicitly the smallest gem in terms of height and size due to Ghost having formed on top of them.
* OnlySaneMan: Tends to act like this to the gems, and specially Phos.
* PlayboyBunny: Supplemental art has depicted them wearing the outfit, [[spoiler: likely as a play on the concept of the MoonRabbit.]]
* SecretKeeper: They are the keeper of Aechmea's secrets and is the only gem he has fully communicated his plans to.
* SerratedBladeOfPain: Their weapon as the Winter Guardian, just like Phos.
* ReplacementGoldfish: Just as Phos offered to be a replacement Lapis, Cairngorm unfailingly offers to be Phos' replacement partner, whether it be for Antarc or for Ghost. [[spoiler:Goes to obsessive levels in Chapter 66, where they tell the Prince they're willing to get artificial Antarcticite grafted onto them and throw away their identity if that will be what it takes to give Phos peace of mind.]]
* SickeninglySweethearts: With [[spoiler:Aechmea]]. The only problem with this is that Cairngorm has no genuine idea what kind of relationship they're in right now, seeming to like [[spoiler:Aechmea]] but not having the background to understand [[spoiler:what a "wife" is.]]
* SinisterScythe: Uses Ghost's scythe after Ghost's capture.
* SomebodyElsesProblem: [[spoiler:After talking to Aechmea, Cairngorm couldn't care less about Phos' activities or the activities of the rest of the Lustrous, preferring to support Aechmea and focus on learning more about science and the Lunarians.]]
* TakeUpMySword: Takes Phosphophyllite's place as the Winter Guardian during the 102 years Phos is asleep.
* TalkingToThemself: They were the "other Gem" inside of Ghost, who sometimes made themselves known by being more brash than usual.
* TalkToTheFist: The first thing they do when meeting Phos face to face is to punch them so hard Phos's face breaks.
* TeethClenchedTeamwork: With Phos, to a degree. They end up functioning very well as a team.
* ThatManIsDead: [[spoiler:Upon replacing their eyes, Cairngorm denies all parts of their life inside Ghost and after they're given a new name, saying that the things they did and the partnerships they had were all Ghost's doing. They also reject [[DoNotCallMePaul being called Cairngorm]], saying that they never liked the name personally. As of the 220 year time skip they have taken on the title of Moon Princess as their new name.]]
* TheSymbiote: They lived inside of Ghost, and only end up becoming autonomous when Ghost gets peeled off them.
* ThePromise: Promised to Ghost to protect Phos, which motivates a lot of what they do.
* UnlimitedWardrobe: After [[spoiler: going to the moon, Cairngorm is almost never seen in the same outfit twice, not even on the same day.]]
* VitriolicBestBuds: With Phos. Although they bicker a lot, Cairngorm really does care about them. [[spoiler:Noticably, unlike the other gems Phos takes to the moon, Cairngorm has no underlying motive to accept Phos' invitation-- they just go because Phos asked them to. However, this is called into question later when Aechmea insinuates that Cairngorm is being compelled to obey and protect Phos through leftover inclusions, meaning they may not have had a say in the matter.]]
* WalkingSpoiler: You can't really mention the Gem without mentioning that [[spoiler:Ghost peeled off from them.]]
* WhatWouldXDo: A lot of the Gem's internal struggle has to do with them denying parts of their real self in order to accommodate Phos, by being the perfect Antarcticite stand in. The example Cairngorm gives has the Gem stray away from more flashy and feminine clothing because "Antarc would never do that".
* [[WhenSheSmiles When They Smile]]: Cairngorm isn't the most chipper person when released, and doesn't smile at all around the other Gems. [[spoiler:However, they smile for real on the Moon when they're with Aechmea, presumably because they feel like he's the one person who encouraged their need for individuality.]]
* YouAreWorthHell: [[spoiler:Decides that they are willing to follow Aechmea into oblivion following the pair's wedding in chapter 75.]] However, in Chapter 76, their reaction to "fade away into nothingness" seems less like they know [[spoiler:they're going to be TogetherInDeath if the gem goes through with it]], and more like [[spoiler:they'll end up somewhere else]].
[[/folder]]

[[folder:Morganite]]
!!Morganite
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/morganite.png]]
[[caption-width-right:350:The Naughty One.]]

-->'''Voiced by:''' Creator/MutsumiTamura (Japanese), Olivia Swasey (English)

A daring gem that mocks Phos. They are the partner of Goshenite.
----
* AffectionateNickname: Morga.
* NaughtyIsGood: Behaves like a naughty child.
* RedOniBlueOni: The bold red oni to Goshe's blue timid oni.
* RoseHairedSweetie: Averted, as they are bratty and reckless. Played straight with their new incarnation.
* ReplacementScrappy: In universe, New!Morganite fears being this for the old Morga.
* SempaiKohai: The new Morganite and Goshe stick to Phos like glue after Phos wakes up again, and refer to Phos as "sempai".
* SignificantHaircut: New!Morganite wears their hair in a ponytail.
* ShrinkingViolet: New!Morganite after the Timeskip.
* SuspiciouslySimilarSubstitute: Both Morganite and Goshenite were taken away by the Lunarians during the Timeskip, however, both identical gems were born after it from the Beach of Beginnings.
* TheTease: To Phos, at the beginning.
* ThoseTwoGuys: With Goshenite.
* ToxicFriendInfluence: To Goshenite, which makes them both get yelled by Sensei.
[[/folder]]

[[folder:Goshenite]]
!!Goshenite
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/goshenite.png]]
[[caption-width-right:350:The Gentle One.]]

-->'''Voiced by:''' Creator/SaoriHayami (Japanese), Creator/JulietSimmons (English)

A gentle gem. Partner of Morganite.
----
* AffectionateNickname: Goshe, or Goshen as in the English translation.
* BloodKnight: New!Goshenite shapes up to be this.
* JumpedAtTheCall: The second Goshe practically jumps aboard when Phos offers to take them to the Moon.
* NiceGuy: A rather sweet and pleasant person, if not much else.
* RedOniBlueOni: Blue to Morga's Red.
* SempaiKohai: The new Morganite and Goshe stick to Phos like glue after Phos wakes up again, and refer to Phos as "sempai".
* SuspiciouslySimilarSubstitute: Both Morganite and Goshenite were taken away by the Lunarians during the Timeskip, however, both identical gems were born after it from the Beach of Beginnings.
* ThoseTwoGuys: With their partner Morganite.
* TotallyRadical: nuGoshe speaks like this post-time skip after spending centuries on the moon.
* ToxicFriendInfluence: Morganite is this for them.
[[/folder]]

[[folder:Red Beryl]]
!!Red Beryl
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/redberyl.png]]
[[caption-width-right:300:Fashion Tailor.]]

-->'''Voiced by:''' Creator/MaayaUchida (Japanese), Cat Thomas (English)

A gem in charge of the making of clothes for everyone. Very obsessed about fashion.
----
* ExpositoryHairstyleChange: Their hairstyle changes in every arc to showcase their fashionable nature.
* TheFashionista: Their role and attitude as the clothes designer.
* FreakOut: [[spoiler: Throws themselves off a cliff after Phos takes gems to the moon.]]
* GirlishPigtails: Most times they wear their hair like this.
* MarriedToTheJob: They are very fixated on what they do.
* MissedTheCall: Phos was [[spoiler: intending to take them to the moon too, but ran out of time to convince them and ended up leaving them behind.]]
* MotorMouth: When defending fashion, they go on and on with long ramblings.
[[/folder]]

[[folder:Amethyst 84 & 33]]
!!Amethyst 84 & Amethyst 33
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/amethyst.png]]
[[caption-width-right:350:Crystal Twins.]][[caption-width-right:350:[[labelnote:Click here to see Amethyst 84 [[spoiler: after the 220 year time skip]]https://static.tvtropes.org/pmwiki/pub/images/ame1.png]]]][[/labelnote]]

-->'''Voiced by:''' Creator/KanaeItou (Japanese), Teresa Zimmerman (English)

Two gems born of the same type, who pair together. No one knows which one is which.
----
* BattleCouple: They are both paired together during battles.
* BraidsOfAction: One surrounding each of their heads.
* CoordinatedClothes: Usually wear the same style of clothing, probably to maintain the confusion about which one is which.
* CreepyMonotone: The anime has them talking like this.
* DivergentCharacterEvolution: Discussed: 33 wonders whether them being so similar isn't a problem and wants to be able to act independently. [[spoiler: 84 overhears this conversation and decides to impersonate 33 to protect them from the moon, leaving them behind and allowing 84 to develop their personality independently of 33.]]
* FinishingEachOthersSentences: Very prone to doing this.
* FourTemperamentEnsemble: One of them is sanguine, while the other is phlegmatic.
* TheGadfly: They both enjoy teasing Phos a lot.
* GoodJobBreakingItHero: Two times, actually. First, the got shattered by the Lunarians while trying to impress Phos, and later, they scatter the first Lunarians to ever communicate with Phos because it was an enemy.
* IdenticalTwinIdTag: Generally, 33 has their braid on their right eye, and 84 on their left. It's such a slight difference that nobody really notices it, nor do they care, and the pair enjoy having others be confused. [[spoiler: 84 drops this on the moon, wearing their braid like a headband instead.]]
* ImportantHaircut: [[spoiler:After the time skip]] Amethyst 84 [[spoiler:ditches their side parted hair and wears their hair more straight, no longer pairing with 33's hairstyle.]]
* LabcoatOfScienceAndMedicine: [[spoiler: 84 begins to wear one on the Moon once they take up science.]]
* LikeCannotCutLike: Being the exact same material and of exactly equal hardness, they can't break each other.
* MasterSwordsman: Noted to be really proficient in sword skills.
* NonIndicativeName: They are the only Amethysts, not the 33rd and 84th of their kind. The numbers refer to the overall birth order of the gems.
* SingleMindedTwins: To the point no one really cares anymore to which one they are talking to, and neither do the twins. [[spoiler: Dropped when 84 decides to go to the Moon.]]
* TricksterTwins: They like pulling pranks on the other Gems.
* TwinSwitch: 84 switches places with 33 during the [[spoiler:trip to the Moon]], in order to protect the latter. To trick Phos, they style their hair the way 33 styles it.
[[/folder]]

[[folder:Alexandrite]]
!!Alexandrite
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/alexandrite.png]]
[[caption-width-right:300:Moon Geek.]]

-->'''Voiced by:''' Creator/RieKugimiya (Japanese), Shelby Blocker (English)

The gem in charge of collecting information about the Lunarians. Has a split personality in the form of a crazy berserker that kills any Lunarian on sight.
----
* AdmiringTheAbomination: Is really interested in Shiro, coming from the Moon and all of that.
* AffectionateNickname: Alex-Chan.
* AwesomeButImpractical: Red Alex. While Red is easily one of the best fighters among the gems, they are unhinged and completely unable to be reasoned with. Nothing will stop them from fighting except being completely incapacitated in some way, either by losing all their energy or [[spoiler:getting shattered.]]
* AxeCrazy: Red Alex is definitively this, [[spoiler:to the point they decapitate themselves trying to keep fighting when restrained.]]
* TheBerserker: Red Alex, who only comes out in an UnstoppableRage mode.
* CloudCuckoolander: Mostly spaces out and seems overexcited with anything related to the Lunarians.
* CurbStompBattle:
** Utterly ''destroys'' Shiro as Red Alex, an impressive feat considering Dia and Bort's inability to contain him.
** Red Alex later [[spoiler:curb stomps the entire Earth gem faction minus Cinnabar, Euclase, and Bort (who'd already been shattered by Dia).]]
* DeathGlare: Red Alex gives an unnerving one when [[spoiler: Phos throws Shiro towards the gem]].
* DullSurprise: While finishing reports and seeing [[spoiler: Shiro chasing Dia over the hallway]].
* FieryRedhead: Red Alex, of the batshit violent variety.
* FreudianExcuse: Both the gem's hate and interest in the enemy seems based on the fact that Alex's partner Chrysoberyl got snatched away many years ago by them.
* HandicappedBadass: They are incredibly potent in combat... As [[SplitPersonality Red Alex]], who is AxeCrazy and can only focus on fighting. They might be one of the strongest gems if not for that one flaw. [[spoiler:Their strength is shown to only be surpassed by Padparadscha and Bortz, as they easily curb stomp every single other gem in their path.]]
* HeroicBSOD: [[spoiler:Upon learning the ultimate fate of the captured gems on the moon--getting ground into a fine dust and spread all over the surface--Alex's reaction is falling to their knees in despair and start ''literally'' falling apart.]]
* HiddenDepths: Loves cooking and food when they finally get to try it.
* IncomingHam: Alex's first appearance on Chapter 14.
* OffWithHisHead: [[spoiler:They decapitate themselves in red form when Benito tries to stop them from shattering Neptunite.]]
* OldSoldier: One of the oldest gems.
* OneWayVisor: They are shown wearing one [[spoiler:on the Moon after the time skip, likely to prevent them from transforming into Red Alex in the presence of Lunarians.]]
* {{Otaku}}: The normal Alexandrite, for anything related to the Lunarians. As it turns out, as Normal Alex their obsession with them and desire to learn more mainly stems from their desire to overcome their condition that drives them crazy when they see a Lunarian.
* TheLostLenore: Chrysoberyl.
* PowerDyesYourHair: Alex's hair turns red when they transform into their other personality.
* RapunzelHair: Goes past the legs.
* ScreamingWarrior: Gives an impressive roar after [[spoiler: cutting Shiro into pieces]].
* SincerestFormOfFlattery: Imitates Kongou-Sensei, Buddhist clothes and all, while trying to teach Phos about the Lunarians.
* SplitPersonality: Divided between the blue, ditzy and geeky personality and the red, who is a crazy Lunarian hater who slaughters them on sight. Because of this, Kongou-Sensei ordered that Alex should be forbidden for seeing any Lunarians, as they cannot control their transformation and Red Alex is TheBerserker.
* SplitPersonalityTakeover: Discussed in Chapter 73: [[spoiler: Alexandrite wants to be Red permanently and wants Phos's help to do it in order to be able to protect Phos and get the other gems repaired. Phos ultimately denies them this, stating that it would be immoral.]]
* SupremeChef: They've become one [[spoiler:on the moon. Lunarians flock from all around to eat their cooking.]]
* SuspiciouslySpecificDenial: In the omakes. Alex isn't doing the job [[{{Tsundere}} because they like it or anything]]...
* ThereIsNoKillLikeOverkill: As Red Alex, they utterly [[spoiler:trounce Shiro, and then do it ''again'', breaking Shiro into little pieces]].
* UnstoppableRage: As Red Alex they're unable to be calmed and will ''destroy'' any Lunarian they come into contact with.
[[/folder]]

[[folder:Benitoite]]
!!Benitoite
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/benitoite.png]]
[[caption-width-right:300:He tries.]]

-->'''Voiced by:''' Creator/AriOzawa (Japanese), Elissa Cuellar (English)

A gem whose room is next to Cinnabar's. Partner of Neptunite.
----
* AffectionateNickname: Benito.
* ButtMonkey: Tends to get the short end of the stick most of the times.
* CornerOfWoe: Done when they ruin the plan to face the multiple appearing Sunspots.
* ExtremeDoormat: Cant say "no" of someone asking for their help.
* TheGenericGuy: Sees themselves as this, given their lack of quirks compared to the other Lustrous. [[spoiler:Their desire to become less generic leads to them accepting Phos' offer to go to the moon]].
* GoodJobBreakingItHero: Due to their inexperience, they ruins the entire coordination plan to capture the New Vessel. While they blames themselves a lot about it, the other Gems are very kind and do not mind that much.
* HiddenDepths: Benito is actually pretty perceptive; they're the only Gem that verbally objects to [[spoiler:Alexandrite trying to stay locked in Red mode]], citing all of the other Gem's problems with their physiology.
* KidWithTheLeash: They literally hold [[spoiler:Red Alex]] on a leash to try to mitigate their damage to [[spoiler:the Earth gems. This backfires when Red Alex is significantly stronger than Benito and simply flings them around and accidentally beheads them.]]
* OffWithHisHead: [[spoiler:Is accidentally decapitated when Red Alex's head crashes into theirs.]]
* ShipperOnDeck: Seems to think of Phos and Cicada in the same type of relationship as [[spoiler:Aechmea and Cairngorm]].
* ThoseTwoGuys: With Neptunite.
[[/folder]]

[[folder:Neptunite]]
!!Neptunite
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/neptunite.png]]
[[caption-width-right:300:Sharp tongue.]]

-->'''Voiced by:''' Creator/AtsumiTanezaki (Japanese), Creator/CarliMosier (English)

A very serious gem, partner of Benitoite.
----
* AwLookTheyReallyDoLoveEachOther: Nepti usually has nothing good to say about Benito but at the heart of it all decides that they really do like the other Gem. It takes them a god while to even remember they liked Benito though.
* BrutalHonesty: A firm believer of this.
* DeadpanSnarker: Known for their sharp tongue.
* TheQuietOne: Even described as such in their character bio.
* ThoseTwoGuys: With Benitoite.
* TsurimeEyes: Much like Lapis, they have narrow eyes.
[[/folder]]

[[folder:Obsidian]]
!!Obsidian
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/obsidian_6.png]]
[[caption-width-right:300:Small blacksmith.]]

-->'''Voiced by:''' Creator/RyoHirohashi (Japanese), Shanae'a Moore (English)

The gem in charge of designing and making the weapons everyone use in battle.
----
* TheBlacksmith: Their role.
* CuteBruiser: Small and cute, but still is the one handled with designing and fabricating the heavy swords the Gems wield in battle.
* MarriedToTheJob: Very fixated in blacksmithing and making new weapons.
* SciFiBobHaircut: Wears their hair like this.
[[/folder]]

[[folder:Watermelon Tourmaline]]
!!Watermelon Tourmaline
[[quoteright:176:https://static.tvtropes.org/pmwiki/pub/images/tourma.jpg]]
[[caption-width-right:176:Shocking when angry.]]

-->'''Voiced by:''' Sayaka Harada (Japanese)

A gem with the ability to release lightning. Partner of Hemimorphite.
----
* AffectionateNickname: Melon.
* BigDamnHeroes: With Bort and Zircon while saving Phos and company from the Board Pieces.
* CloudCuckoolander: A head in the clouds type.
* FlowerInHerHair: Wears a pink flower-thingy on their hair, matching the green and pink coloring of real watermelon tourmalines.
* LetsGetDangerous: Puts on an angry face in battle and electrocutes several Lunarians to death when their friends are threatened.
* RapunzelHair: Has a very long green mane.
* RoseHairedSweetie: Well, rose and green haired sweetie.
* ShockAndAwe: Just like the real gem, they have the ability to create electricity, which they use to fight.
* ThoseTwoGuys: With Hemimorphite.
* YouWouldntLikeMeWhenImAngry: They release electricity if pissed off enough.
[[/folder]]

[[folder:Hemimorphite]]
!!Hemimorphite
[[quoteright:118:https://static.tvtropes.org/pmwiki/pub/images/torma.jpg]]
[[caption-width-right:118:Aspiring Intellectual.]]

-->'''Voiced by''': Creator/ReinaUeda

One of the youngest gems, partner of Tourmaline.
----
* BigBrotherWorship: To Peridot.
* FashionableAsymmetry: Their hair.
* OnlySaneMan: Tends to act like this, for Tourmaline by telling them to stop having deep conversations in the middle of the battle, and to Euclase and Jade in regards of waking up Sensei.
* RapunzelHair: Their hair is as long as Alex.
* ThoseTwoGuys: With Tourmaline.
[[/folder]]

[[folder:Peridot]]
!!Peridot
[[quoteright:116:https://static.tvtropes.org/pmwiki/pub/images/peri_7.jpg]]
[[caption-width-right:116:Mature and Smart.]]

-->'''Voiced by:''' Creator/HoukoKuwashima

One of the oldest gems, partnered with Sphene. An intellectual in charge of making paper.
----
* DeadPartner: Blue Zoisite.
* DissonantSerenity: Rather unfazed by everything.
* MarriedToTheJob: Obsessed with making paper, their occupation.
* NotSoAboveItAll: Very focused and mature, until the moment paper is involved. They are known to sleep covering themselves in freshly made paper and laughing.
* ThoseTwoGuys: With Sphene.
* SempaiKohai: Is one of the oldest gems, along with their partner Sphene, Yellow Diamond, Padparadscha and Alexandrite, and as such treats all their juniors like a sempai would.
* TheSmartGuy: Described as this.
[[/folder]]

[[folder:Sphene]]
!!Sphene
[[quoteright:136:https://static.tvtropes.org/pmwiki/pub/images/peri_70.jpg]]
[[caption-width-right:136:The Repair Man.]]

-->'''Voiced by:''' Creator/HitomiNabatame

One of the oldest gems, partner of Peridot. Their job is to repair things.
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* DeadPartner: Topaz.
* BraidsOfAction: Their hair is made into three long braids.
* MrFixit: Their job.
* MulticolorHair: Orange with red and green streaks.
* RapunzelHair: Untying their three braids would make their hair look like Padparadscha's.
* SempaiKohai: One of the oldest gems, like Peridot, and treats the youngest gems like an younger siblings.
* ThoseTwoGuys: With Peridot.
[[/folder]]

!!!Captive

[[folder:Lapis Lazuli]]
!!Lapis Lazuli
[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/new_canvas_8.png]]
[[caption-width-right:258:Bibliotecary Head.]]

The former Head of the Library and Mentor for Ghost Quartz and Cairngorm, as well as the investigator on the Moon People. Currently captive on the Moon.
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* AwesomenessByAnalysis: Subverted. While Lapis was a competent fighter, [[spoiler:their inability to stop thinking distracted them as they were trying to analyze the Moon People and resulted in their decapitation.]]
* BadassBookworm: Was head of the Library, and according to Ghost an overall good fighter.
* BeautifulDreamer: Their first appearance is [[spoiler:as a beautiful and serene looking head.]]
* BequeathedPower: [[spoiler: Gives their intelligence to Phos in the form of their head during a dream sequence.]]
* CharacterTics: [[HairFlip Flipping their hair]] behind their shoulders. Cairngorm freaks out when they see Phos do it with Lapis' head.
* TheCorrupter: To Phos. Once Phos [[spoiler:receives Lapis' head in place of their own]], Phos begins having conversations with Lapis that go a long way towards making Phos suspect something more is wrong with Sensei. Phos also begins acting more secretive and manipulative thanks to Lapis' influence.
* HimeCut: Though their bangs have a minor part to the right, they have the straight hair reaching to their waist, blunt bangs, and even small side locks. It emphasizes their elegant beauty.
* HyperAwareness: Their intelligence gave them that power, which Phos inherits after getting their head.
* KilledOffForReal: Likely, since [[spoiler:though they could be remade their head permanently belongs to Phos now, as Phos's head cannot be remade.]]
* TakeUpMySword: Lapis implies [[spoiler: they wanted to go to the moon and learn more about the Lunarians and their motives, encourages Phos to do the same, and gives Phos their head so they can better analyze and plan out their situation.]]
* TheLostLenore: For Ghost Quartz and their inner Gem, Cairngorm. Ghost blames themselves for Lapis's capture, and as a result [[spoiler:their inclusions force Cairngorm to protect Phos so they will not be taken.]]
* MentalFusion: Possibly with Phos, as Lapis has had a very profound effect on Phos's mental state and [[SlowlySlippingIntoEvil descent into moral ambiguity]].
* OffWithHisHead: Only their sleeping head remains, as everything else was taken to the moon. It's later attached to Phos' own headless body.
* ManipulativeBastard: According to Euclase, Lapis could prey upon anyone's weaknesses and knew just what to say to a person in order to get what they wanted. [[spoiler:This rubs off on Phos as time goes on.]]
* TheSmartOne: Comes with being the Library chief.
* TheSociopath: Again according to Euclase, Lapis did not care about the wellbeing of others, preferring to satisfy [[ItsAllAboutMe their own curiosity and goals above all else.]]
* SpiritAdvisor: For Phos, once Phos gets their head.
* TalkingIsAFreeAction: Subverted. Lapis admits they got captured because the Lunarians shot at them while they were having one of the internal observation monologues Phos later inherits.
* TokenEvilTeammate: Implied [[spoiler:as Phos becomes much more morally ambiguous after gaining their head.]]
* TsurimeEyes: They have noticeably sharp eyes, giving them an arrogant look even when smiling. They hint at Lapis's [[ManipulativeBastard darker nature]].
[[/folder]]

[[folder:Red Diamond]]
The first Gem Sensei encounters and raises.
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* CheerfulChild: Growing up under Sensei's tutelage, they were a very happy and satisfied Gem with a childlike personality.
* PosthumousCharacter: For all intents and purposes, they are this.
* SeldomSeenSpecies: Both in terms of public knowledge and in real life. Red Diamonds are extremely uncommon to come by, even artificially.
[[/folder]]

[[folder:Others]]
!! In general
* TheReveal: Ruby, Sapphire, Pink Topaz, and Green Diamond are shown when Yellow Diamond reminisces about them, while (Imperial) Topaz, Blue Zoisite, and Chrysoberyl are shown in the art book.
!!Heliodor
Currently captive on the Moon.

!!Green Diamond
Yellow Diamond's former partner. Currently captive on the Moon.

!!Pink Topaz
Yellow Diamond's former partner. Currently captive on the Moon.

!!Ruby
Yellow Diamond's former partner. Currently captive on the Moon.

!!Sapphire
Yellow Diamond's former partner. Currently captive on the Moon.

!!Blue Zoisite
Peridot's former partner. Currently captive on the Moon.
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* JapaneseDelinquents: According to their description in the official art book, they're stated to have the demeanor of one.

!!Chrysoberyl
Alexandrite's former partner. Currently captive on the Moon.
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* TheSmartGuy: Stated to have been like an honor student in the official art book.
!!Topaz
Sphene's former partner. Currently captive on the Moon.
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* NiceGuy: They're stated to have been warm and caring in the official art book.

!!Pink Fluorite
Currently captive on the Moon.

!!Aquamarine
Red Beryl's former partner. Currently captive on the Moon.
[[/folder]]
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** Chapter 89 reveals the reason why he's this way: [[spoiler:He was intentionally built to be obedient to humans because his predecessor machine tried to wipe out humanity via purposeful miscalculation.]]

* HairDecorations: A flower.

* WomanInWhite: Wears all white following [[spoiler:the return from the Moon]] and gives off an air of mystery to the other gems.

* WomanInWhite: Wears white and comes off as aloof and distant.

Back To Characters/LandOfTheLustrous

[[/folder]]

* VitriolicBestBuds: With Phos. Although they bicker a lot, Cairngorm really does care about them [[spoiler:Noticably, unlike the other gems Phos takes to the moon, Cairngorm has no underlying motive to accept Phos' invitation-- they just go because Phos asked them to. However, this is called into question later when Aechmea insinuates that Cairngorm is being compelled to obey and protect Phos through leftover inclusions, meaning they may not have had a say in the matter.]]

* AnArmAndALeg: Cairngorm's left arm is always coming off. The original arm was taken off just before Ghost sacrificed themselves, so they have it replaced with smoky quartz later. It comes off a second time, which leads to Phos [[spoiler: losing their head]] when they try to retrieve it.[[spoiler:Following their FreakOut, the arm comes off yet again and the gem has it replaced with artificial Cairngormite. Unlike other times when Gem parts are replaced, Aechmea mentions that it needed glue and a cast to set, meaning it doesn't quite sync up with the rest of the body.]]

* AlwaysSecondBest: In fighting, when compared to Bort. Despite both of them having hardnesses of 10, Dia will shatter easily if hit in the right place. It's sort of a touchy subject. [[spoiler:Their insecurities about this lead them to choose to go to the Moon with Phos.]]

* {{Psychopomp}}:[[spoiler: Should be the one to guide human souls to the afterlife, but is not completing the task for some reason]].

* {{Technophobia}}: Aechmea suggests Sensei is one, [[spoiler:by not allowing the gems to experiment with new technology so they didn't figure out he was a robot.]]

* EverythingsBetterWithPrincesses: [[spoiler:In becoming Aechmea's lover, Cairngorm was designated the Princess of the Moon people. How ''good'' this development is remains to be seen.]]

* TheLastOfTheseIsNotlikeTheOthers: Mostly doesn't wear powder, shorter than the rest, and [[spoiler:completely embraces Lunarian culture, changing their name and happily enjoying a romantic relationship]] unlike every other Gem.

* {{Foil}}: To Antarcticite. Both are Phos' major partners, but they eventually lay on opposite sides of the conflict; Antarc favors and follows Sensei, while Cairngorm does the same for [[spoiler:Aechmea]]. The gem collection art book makes them parallel each other even less subtly, with both of their busts proped up by the affectionate hand of their mentor.

* BecomeARealBoy: Implied as of Chapter 77: [[spoiler: Phos is able to get past Sensei's authentication system and he tries to obey Phos's plea, highly suggesting Sensei now sees Phos as a human rather than a gem.]]

* DeepSleep: They all hibernate during winter, since the sunlight becomes so faint. The exceptions are Sensei, who is always sleepy regardless of the weather, and whoever is the Winter Guardian. The Winter Guardiam endures the effort of staying awake in low sunlight in order to keep Sensei company in protecting the other sleeping gems.

* SlowlySlippingIntoEvil: For all of Phos' good intentions, they unfortunately slowly slip down this slope soon after [[spoiler: getting Lapis's head]]. Phos is slowly going down the slope, first [[spoiler: going to the moon and then making a DealWithTheDevil with the Lunarians, then manipulating other gems to come the moon with them, eventually asking Sensei to pray for them alone once Sensei admits he cannot pray for all the Lunarians, then desiring to break all the earth gems when even Sensei praying just for Phos has failed. Now Phos simply wants to destroy]].