History Literature / TheCaseFilesOfJewelerRichard

* HomoeroticDream: In volume 4, [[spoiler:Seigi has dreams where Richard almost kisses him.]]

''The Case Files of Jeweler Richard'' (''Hōsekisho Richard-shi no Nazo Kantei'', or "The Mystery Appraisals of Mr. Richard the Jeweler") is an ongoing novel series written by Creator/NanakoTsujimura with cover illustrations by Yukihiro Utako, which began publication in 2015. It received an anime adaptation in January 2020 by Shuka. A manga adaptation illustrated by Mika Akatsuki started serialization in the ''Monthly Comic Zero Sum'' magazine in November 2019.

* SurprisinglyGoodForeignLanguage: Richard's voice actor, Creator/TakahiroSakurai, worked very carefully on Richard's pronunciation of his many foreign languages and even worked on giving him a British accent in Japanese.

* CryIntoChest: Seigi, to Richard's chest in episode 10/volume 4 after Richard tells Seigi how important he is to him. In the novels, Richard pulls away almost immediately, but the anime shows him hugging back.

* InnocentCohabitation: In the novels, [[spoiler:Seigi and Richard end up living together at least part time in one of Saul's houses in Sri Lanka. They have separate bedrooms.]]

''The Case Files of Jeweler Richard'' (''Hōsekisho Richard-shi no Nazo Kantei'', literally "The Mystery Appraisals of Mr. Richard the Jeweler") is an ongoing novel series written by Creator/NanakoTsujimura with cover illustrations by Yukihiro Utako, which began publication in 2015. It received an anime adaptation in January 2020 by Shuka. A manga adaptation illustrated by Mika Akatsuki started serialization in the ''Monthly Comic Zero Sum'' magazine in November 2019.

''The Case Files of Jeweler Richard'' is an ongoing novel series written by Creator/NanakoTsujimura with cover illustrations by Yukihiro Utako, which began publication in 2015. It received an anime adaptation in January 2020 by Shuka. A manga adaptation illustrated by Mika Akatsuki started serialization in the ''Monthly Comic Zero Sum'' magazine in November 2019.

* UnnknowinglyInLove: After Saul's ArmorPiercingQuestion to Seigi asking him if he knows he's romantically in love with Richard, Seigi spends days questioning his own feelings, having never considered them love at all. In the end, he comes to terms with the fact that he does love Richard (even if he's still not sure it's romantic).

* HoldOnToMyHat: Seigi and Richard exchange [[spoiler:sapphires]], which come with implicit promises to be returned one day, so they have to stay in each other's lives as long as they keep them.

* FriendshipTrinket: Seigi and Richard exchange [[spoiler:sapphires]] and promise to return them to each other one day, and until then need to keep in contact, cementing their relationship.

[[quoteright:200:https://static.tvtropes.org/pmwiki/pub/images/volume_1_cover_5.jpg]]
[[caption-width-right:200:Main characters, [[{{PrettyBoy}} Richard]] (left) and [[TheProtagonist Seigi]] (right).]]

[[redirect:LightNovel/TheCaseFilesOfJewelerRichard]]

[[quoteright:200:https://static.tvtropes.org/pmwiki/pub/images/volume_1_cover_5.jpg]]
[[caption-width-right:200:Our main characters, [[{{Biseinen}} Richard]] (left) and [[TheProtagonist Seigi]] (right).]]

One night, while returning home from his job, university student Seigi Nakata rescues a beautiful British man named Richard Ranasinghe de Vulpian from a group of drunks. Richard is a jeweler who travels the world selling jewels to clients and hires his Seigi to work in his Japanese shop part-time, beginning their partnership uncovering mysteries behind the jewels and customers they encounter.

''The Case Files of Jeweler Richard'' is an ongoing novel series written by Nanako Tsujimura and with cover illustrations by Yukihiro Utako. It received an anime adaptation in January 2020 by Shuka. A manga adaptation, illustrated by Mika Akatsuki, started serializaton in the Monthly Comic Zero Sum magazine in November 2019.

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!!This series shows examples of:
* AbortedDeclarationOfLove: Happens in episode 8, where [[spoiler:Seigi almost confesses to Tanimoto, but didn't.]]
* ActOfTrueLove: Seigi [[spoiler:is willing to spend the rest of his life in prison to destroy the diamond inheritance that is causing strife in Richard's life. Slightly averted when it comes out later that Seigi believes he deserves to go to jail before he hurts someone like his biological father would and was using Richard's situation as a way to go out helping someone.]]
* AdaptationDistillation: Due to the time and episode constraints of the anime, some cases from the novels are entirely left out of the anime adaptation, and the cases that ''are'' adapted are shortened, with many scenes and much of Seigi's internal narration cut out for brevity (see EveryoneCanSeeIt).
* AdaptationalExplanation: The anime introduces [[spoiler:lapis lazuli and ultramarine]] a couple of episodes before it’s actually needed; in the novels, the reader is just meant to assume Richard explaining the properties of this gem happened off screen at some point.
* AdaptationPersonalityChange: Richard goes from a snarky, anxious, awkward, childish tsundere to an eternally calm, unflappable man who never makes a mistake.
* AllChinesePeopleKnowKungFu: The one recurring Chinese character/Hong Konger is a martial artist.
* AllThatGlitters: [[spoiler: The diamond left to Richard's spouse in his great-grandfather's will turns out to be a white sapphire valued for far less money.]]
* AlmostKiss: In volume ten, [[spoiler: Richard seems to be preparing to kiss Seigi before Seigi asks him to explain his feelings in words instead.]]
* AmicableExes: Richard and his ex-fiancee.
* AngerBornOfWorry: Seigi in volume four and episodes 9 and 10 of the anime, Richard during Tanzanite in volume 6 and episode 12 of the anime.
* AnywhereButTheirLips: Richard and Seigi do this a number of times.
** In volume four, [[spoiler: Richard kisses Seigi's cheek after things are resolved with the White Sapphire. Seigi initially denies it was a kiss, but admits to it later.]]
** In volume nine, [[spoiler:Richard kisses Seigi's forehead.]]
** In volume ten, [[spoiler: Seigi kisses Richard's finger.]]
*** [[spoiler:Possibly finally subverted in volume ten when Richard returns Seigi's hand kiss. Seigi insists it was his hand, but the narration is a little unclear if that's exactly true.]]
* ArmorPiercingQuestion: Saul to Seigi at the beginning of volume 4: [[spoiler:“Are you aware that you’re in love with Richard?”]] It’s a topic that not only sees much thought from Seigi throughout the volume, but also one that comes up again at other points later.
* ArrangedMarriage: Averted, but this almost happens to [[spoiler:Tanimoto]].
* AsLongAsItSoundsForeign: Averted. The foreign language in the anime is [[SurprisinglyGoodForeignLanguage all accurate.]]
* {{Auction}}: Episode 7.
* TheBeautifulElite: Aside from the beautiful Richard, his cousin Jeffrey isn’t too shabby in the looks department either. And they’re both part of the [[spoiler:noble and wealthy Claremont family.]]
* BelatedLoveEpiphany: Seigi has two of these:
** One in volume four/episode 9, when [[spoiler:Richard leaves for London and he says he feels "like there's a hole in his chest. Saul causes this one and Seigi settles on "ai" to describe how he feels about Richard.]] Before this he does note that he's fond of Richard, but he was unaware of the intensity.
** The second in volume nine, when Seigi considers what life would be like [[spoiler:if Richard got married to his ex and had kids and starts crying at the thought and realizes there's no reason he would do that if he didn't love Richard.]]
* BeleagueredChildhoodFriend: A variant of this with Hase-senpai from Seigi's past.
* BirdsOfAFeather: Richard refers to Seigi as a "mirror" to his soul. Sinhalite’s first part is intentionally written to mislead readers on the identity of the mystery man [[spoiler:by having Seigi speak perfect English just like Richard]], expecting readers to guess incorrectly whether the man is Seigi or Richard. While they seem very different at times, the series makes a point to show us that they are very similar people at their core.
* ABirthdayNotABreak: Seigi, in volume six, realizes it's his birthday when his stepdad gives him a present after dealing with [[spoiler: Seigi's abusive biological father]]. Also Richard, discussing the events of the past in episode eleven, which mostly took place on his ninth birthday, also a BirthdayPartyGoesWrong.
* {{Bishounen}}: Richard. Enough said.
* BlatantLies: Seigi, insisting he doesn't know what kinds of things Richard likes as he Just Works There when a female client wants to thank him for helping her...approximately five minutes after he thanks Richard for helping him out the previous episode/chapter with pudding.
* BrattyHalfPint: Hajime in the Cat's Eye case.
* BritishStuffiness: Downplayed for Richard. He is always unfailingly polite and stoic and can be quite snobbish when it comes to tea and cakes, but he is all in all an open-minded and empathetic man.
* BrokenPedestal: Seigi's friend [[spoiler: Hase-senpai turns out to be this in episode 5. Seigi really looked up to him as his senior, but was distraught to learn that his senpai had tried to trick a disabled old woman to obtain money for the expenses like his father's medicines and his sister's school fees. What's worse is that after this ordeal, Hase tells him that he doesn't want to see him because it is too painful and then walks away, thus ending their friendship. However, thankfully, Richard is there to comfort him. ]]
* ButNotTooForeign: Richard is a quarter Sri Lankan.
* CallingParentsByTheirName: Both Richard and Seigi do this to their mothers. [[spoiler:And both stop toward the end of volume eight.]]
* CastFullOfRichPeople: Richard comes from a wealthy family and most of his customers make quite a bit of money to be able to afford absurdly expensive gemstones. Both groups dominate the recurring cast.
* CharacterFilibuster: Much of Richard's dialogue comes in the form of a well-educated lecture.
* ChevalierVsRogue: Seigi and [[spoiler: Vincent.]]
* ChildhoodFriends: [[spoiler: Tanimoto and Homura have known each other since they were children, much to Seigi's surprise. ]]
* {{Cliffhanger}}: Episode 8 ends with [[spoiler: Étranger being temporarily closed down and Richard about to leave for England.]]
* CompletelyUnnecessaryTranslator: Seigi pretends to be one of these for Richard in Turquoise when they go undercover.
** Arguably, he was also pretending to be this in Diamond.
* CoolCar: Richard drives a Jaguar in Japan, which he says go for about five million yen secondhand, and Saul has an Aston Martin in Sri Lanka.
* CreepyUncle: [[spoiler: Richard's distant uncle who sexually harasses him for the majority of volume seven.]]
* CrushFilter: Seigi sees Tanimoto as an angel. Made even more explicit in episode 8 when Seigi finds her at the museum, and the light shining through the window behind her made her look even more ethereal.
* CryIntoChest: Seigi, to Richard's chest in episode 10/volume 4.
** Happens again in volume 9. [[spoiler:Seigi begins to cry at the thought of Richard getting back together with his ex, and Richard pulls him in for a hug.]]
* CueTheRain: The end of episode 5 and the Opal case in volume two, after [[spoiler:Hase-senpai]] breaks Seigi's heart, it immediately starts raining on him. Fortunately for him, Richard picks him up in a car.
* DarkAndTroubledPast:
** Both Seigi's mother and grandmother had troubled pasts. Seigi is also hinted at having a troubled past, most probably issues with his birth-father.
** Richard is also implied to have one as episode 6 reveals that he [[spoiler: used to scam people before meeting Ranasinghe, whose name he's currently using, and his dislike for scammers stems from his own actions as a scammer. It’s later revealed that his family is still fighting over the inheritance his great-grandfather left behind. Richard fell out of his family, was betrayed by a friend, and was forced to break up with his girlfriend as she was afraid that she would end up choosing the money over him. Richard had no choice but to comply as he felt that persisting too much would only make him look more pathetic.]]
* DestroyTheEvidence: In Act 2, this is one goal of [[spoiler:the Claremont Estate stewards. Richard’s grandmother kept records of her less-than-legal gem and jewelry dealings she made to earn the favor of the English nobility, and the estate wants to track them and the copy of those records down before the current Earl Claremont passes away.]]
* DisguisedInDrag: Richard, when he goes to rescue Seigi [[spoiler:from Jeff in London.]]
* DoYouTrustMe: Richard to Seigi throughout most of Tanzanite in volume 6/episode 12.
* EatingTheEyeCandy: Seigi does this so, so, ''so'' much in the novels towards Richard; he can't shut up about how beautiful Richard is, both in his thoughts and out loud (sometimes even accidentally). His internal monologue tends to be PurpleProse at times too. An example from volume 1, where Seigi first meets Richard:
--> '''Seigi:''' "I had never laid my eyes on such a beautiful person in my life. High cheekbones, a straight nose, golden hair that had a habit of being loose, smooth white skin. There were shades in those blue eyes, and it felt like I could stare at them forever. A creature who seemed to have gathered all of their parts from the world’s most beautiful people, and they harmonized together with a miraculous balance. Even time, air, and dust particles flowed around this person in a different rhythm."
* EveryManHasHisPrice: Mostly played for laughs: Seigi repeatedly bribes Richard with sweets and candy to do things Richard does not want to do but Seigi wants to know about.
* EveryoneCanSeeIt: In the novels, Seigi and Richard are often [[MistakenForGay mistaken to be in a romantic relationship]]. The list of people who think this include [[spoiler: Tanimoto, Homura, some of Étranger's customers, strangers, and even Seigi and Richard’s own family members]]. Both of them take turns to clarify that they're JustFriends. Of course, this has occasionally led to funny consequences. The anime so far has not adapted any of these instances, however.
* EverythingSoundsSexierInFrench: Seigi asks Richard to repeat something in French because he likes how Richard says it.
* ExtremelyDustyHome: The villa in volume eight. Richard even gets a spiderweb in his hair.
* FakeRelationship: Seigi pretends to be Richard's lover in front of Jeffery [[spoiler:in London]]. Jeffrey had already made this assumption himself, but Seigi decided to go along with the charade.
* FirstNameBasis: Richard and Seigi, to each other. To be fair, Richard is a foreigner who doesn't come from a culture of addressing people using last names, and ''Seigi'' was the one who first referred to Richard as "Richard-san". (And "Ranasinghe de Vulpian-san" is too long and difficult to use.) But Richard said he wasn't used to being referred to with honorifics, so that was dropped as well.
** Most if not all of Seigi’s college friends refer to him by his first name, though Seigi calls most of them by their [[LastNameBasis last names]] instead.
* FlashForward: In volume six, the Sinhalite case brackets the novel and shows Seigi and Richard years later [[spoiler:living together in Sri Lanka with two dogs, and Seigi is fluent in a number of languages he was not in the current timeline.]] This flash forward happens after the events of ''volume ten'' (but before the volume ten epilogue).
** There is also a much briefer, less significant one in episode seven, which opens with a scene that happens after the midpoint of the episode.
* FriendshipTrinket: Seigi and Richard exchange [[spoiler:sapphires]] and promise to return them to each other one day, and until then need to keep in contact, cementing their relationship.
* FollowingInTheirRescuersFootsteps: Inverted. Seigi saves Richard, and then follows ''his'' footsteps into a career. Of course, Richard does his fair share of the saving later on.
* FoodAsBribe: How Seigi gets Richard to do what he wants Richard to do, always with sweets.
* ForcedOutOfTheCloset: [[spoiler:Jeffrey is outed as gay in volume ten due to issues with the line of succession in the Claremont family. Henry does it as gently as possible and Richard and Henry both comfort and protect him after it's over.]]
* {{Foreshadowing}} and {{Futureshadowing}}: Tons of this, all over the place, everywhere. For about anything you can imagine and more you'll still miss.
* GentlemanSnarker: Richard.
* GreenEyedEpiphany: In volume nine, [[spoiler:Seigi considers what his life would be like if Richard got married to his ex and adopted her kids, coming to visit Seigi at Étranger and allowing the kids to eat Seigi's pudding, and he gets so jealous and miserable he starts crying and realizes that crying is a very strange reaction if he's not in love with Richard.]]
* HairOfGoldHeartOfGold: The current Richard is this. A beautiful blonde man, he is also an ‘ethical jeweler’ who only sells jewels if the customer truly wants it, lends out large sums of money to acquaintances, and has no tolerance for scammers.
* HeirloomEngagementRing: Lampshaded. Seigi gives the pink sapphire engagement ring his grandmother stole to [[spoiler:Richard in exchange for Richard's white sapphire. Richard mentions this seems like an engagement, but they aren't engaged. Or are they?]]
* HeterosexualLifePartners: By the time volume 9 rolls around, [[spoiler:Seigi wants to at least be this with Richard, if not romantic partners.]] Though it can certainly be argued that the two of them have probably already reached this point earlier. [[AmbiguouslyBi Also, the hetero part is debatable.]]
* HidingBehindTheLanguageBarrier: In Sinhalite, Seigi switches to Sinhala to speak with Richard so the outside narrator can't understand their discussion.
* IdleRich: Subverted. Richard and his cousins all have jobs, despite the immense wealth their family passes down to them. In fact, Jeffrey works so much he qualifies as a {{Workaholic}}.
* IfIDoNotReturn: Seigi has a version of this in volume four. He schedules a text to his mother to tell her to assume he's dead, assuming he'll be arrested in London for the rest of his life for [[spoiler:trying to destroy Richard's inheritance.]]
* IHaveThisFriend: A variation. When Seigi has trouble deciding whether he should [[spoiler: stop Tanimoto from marrying or not, Richard aids him in his decision by quoting Machiavelli and narrating the story of a "certain man in England". Unbeknownst to Seigi, said "certain man" in the story is nobody but Richard himself.]]
* IHatePastMe : Implied in episode 6 with [[spoiler: Richard of all people, as the flashback at the end reveals that he used to be a scammer in the past.]]
* IKissYourHand: In volume ten, [[spoiler:Seigi does this to Richard, complete with kneeling in front of him, and Richard returns the gesture. [[UnreliableNarrator Or]] [[PostKissCatatonia did]] [[OfficialKiss he?]]]]
* InformedAttractiveness: Yes, Seigi, we know you think Richard is gorgeous. Thank you for telling us for the fifth time this page.
* InnocentBigot: Seigi in the early parts of the story. Richard repeatedly calls him out on microaggressions until he gets better about it.
* InnocentlyInsensitive: Seigi. While he ''is'' a kind person and usually bears no ill will towards others, he has the tendency to speak without taking into consideration how his speech might affect the other person, making him come off as rather pushy at times. Richard even calls him out for this.
* InterclassFriendship: The series features a number of these, most obviously Richard and Seigi, but also Seigi and Richard's cousins and [[spoiler:Henry and Shimomura.]]
* JewelersEyeLoupe: Richard ''is'' a jeweler, after all. He has one of these that comes out from time to time.
* LanguageFluencyDenial: Richard does this in the Diamond case, when Seigi asks him to come to a store with him to study diamonds. He is not interested in talking to salespeople and pretends not to speak or understand Japanese for the duration of the visit.
* LastNameBasis: Despite Seigi himself preferring to go by his first name, he has difficulty referring to others in the same way, leading to characters like (Shouko) Tanimoto and (Haruyoshi) Shimomura being known almost exclusively by their last names.
** Shimomura consistently reminds Seigi of his first name after volume 5, but Seigi always goes to call him by his last name before catching himself and still only refers to him by last name in narration.
** Enforced by Seigi to [[spoiler:Jeffrey]], after their rough first meeting. They’re on better terms now, but Seigi is still “Nakata-kun”.
** Enforced by ''Richard'' in relation to Seigi. He tells [[spoiler:Saul in volume 4 not to call Seigi by his first name because Seigi will get attached; this discussion comes up again in volume 10, when Seigi professes he’ll never get this attached to anyone ''but'' Richard.]]
* LateComingOut: [[spoiler:Jeffrey is outed in book ten when he is well into his thirties.]]
* LikeAGodToMe: Seigi refers to Richard and Tanimoto both as angels, and when discussing religion, Richard pops into his head as an object of worship.
* LikeAnOldMarriedCouple: Seigi and Richard. At least one client comments on this to them, others simply assume they're dating or even married already. Even Seigi himself points it out at least once.
* LongLastLook: Seigi gives [[spoiler:Japan]] one of these before [[spoiler:leaving for Sri Lanka.]]
* LoveInterest: Tanimoto is this for Seigi [[spoiler:until he gives up on her for good in volume 9.]]
* LoverAndBeloved: Seigi and Richard.
* ManlyTears: Seigi, a lot:
** In episode 1 after he makes peace with the owner of the ring that his grandmother stole as he realizes that the misdeeds she committed were for her family's sake.
** In episode 5 after his last conversation with [[spoiler: [[BrokenPedestal Hase-senpai]]. After he sits inside Richard's car, he breaks down in tears, saying that he's no hero, and that he's not right at all. Richard comforts him, telling him that his kindness is something he admires and at times, even envies it. ]]
** In episode 10 after [[spoiler:Richard confronts him over his reckless acts and tells him the people Seigi loves want him to be happy.]]
** Twice in volume 9: [[spoiler:once after he speaks with Tanimoto and he allows himself to give up on her, and once at the thought of Richard getting back together with Deborah.]]
** In volume 10, Seigi breaks down into tears [[spoiler:thinking he's ruining Richard's life by wanting to be in it, and again after Richard comforts him and tells Seigi that they're a part of each other now.]]
*** In volume 10, ''Richard'' also has a tearful moment [[spoiler:after Seigi tells him he'd be happy if Richard could be the place Seigi belongs and can always return to.]]
* MasterApprenticeChain: Saul trained Richard, who trains Seigi.
* MeaningfulEcho: In volume 4, Seigi tells Richard [[spoiler:he loves him so much, and that’s why he’s angry with him.]] This line is repeated by Richard to Seigi in volume 6; for some reason, only this latter line was kept in episode 12 of the anime.
* MeaningfulName: Richard's grandmother's hometown, Ratnapura, means "City of gems" in Sinhala.
* MeaningfulRename: Richard's assumed last name was gifted to him by his mentor. [[spoiler:Saul also offers it to Seigi in volume nine.]]
* MementoMacGuffin: Seigi's pink sapphire ring is an heirloom from his deceased grandmother, and that is what kickstarts his relationship with Richard.
* MentalHealthRecoveryArc
** Seigi, recovering from PTSD after [[spoiler:being stalked by his abusive biological father]] in volume six.
** Richard, pre-series, but discussed in Zircon. Appears to be recovered in the main series timeline.
** Henry's character arc.
* MistakenForServant: Seigi, in volume eight.
* MistakenForThief: Seigi, in volume seven.
* MistakenFromBehind: The happens in volume four/episode 9, when Richard is [[spoiler:in London]] and Seigi is looking for him. Turns out to be a random blond stranger.
** This also happens in volume eight, [[spoiler:however, Catherine was doing that to Seigi intentionally.]]
* MomentKiller: In volume ten, [[spoiler:Seigi is upset at the thought that he is negatively impacting Richard’s life. Richard leans incredibly close to his face and tells him that he has two ways to convince him otherwise: One with words, the other much faster without them. Seigi says he likes listening to Richard talk, so Richard pulls back very sulkily and tells Seigi how much he means to him verbally.]]
* {{Motifs}}: Jewels, of course. In the novels, most of the chapters/cases have jewels in their names. The anime does the same with episode titles. The more major characters also tend to have jewels associated with them.
** Seigi: pink sapphire.
** Richard: [[spoiler:white sapphire.]]
** Tanimoto: aquamarine.
* MysteriousPast: Why and how did Richard [[spoiler: fall out of his family? And why exactly is he working for his 'master'?]]
* NiceGuy: Both Richard and Seigi. [[BewareTheNiceOnes Most of the time.]]
* NowLetMeCarryYou: Somehow, Seigi and Richard both manage to do this for each other!
** After three volumes/8 episodes of Richard providing Seigi with knowledge and advice and emotional support, Seigi rushes in to help Richard deal with his family and his DarkAndTroubledPast.
** After Seigi helping him through his difficulties in London and most of six volumes of Seigi acting as Richard's loyal assistant, Richard is furious when Seigi doesn't ask for help [[spoiler:dealing with his biological father]] and intervenes to force Seigi to accept his help.
* OnlyTheKnowledgableMayPass: This happens a few times in the series.
** Saul testing Seigi's knowledge of gemstones with Richard's acrostic ring.
** Richard leaving vague clues for Seigi based on conversations they had previously about gemstones.
** In volume nine, [[spoiler:Vincent asks Seigi everything he knows about coral as a gemstone.]]
** In volume ten, [[spoiler:Octavia sets up a riddle game with Seigi and Richard to test Seigi's knowledge of gemstones and Richard's knowledge of ancient Japanese literature.]]
* PlatonicDeclarationOfLove: Seigi keeps doing this to Richard. Richard also replies with this sometimes. [[HomoeroticSubtext Though the platonic part is debatable.]]
* ThePowerOfLanguage: A central theme throughout the novels, although the anime touches on it a bit less. The novels even have long descriptions of the a sea of words a person can drown in when they're fluent in too many languages.
* PygmalionPlot: Richard loves being a teacher and takes Seigi under his wing to teach him about not only gemstones, but culture, manners, literature, languages as his apprentice in ways that are compared to cutting and polishing a gem...and he truly loves the person Seigi is becoming.
* ReunionVow: In episode ten of the anime, Richard states he doesn't know what he's going to do after finally resolving his family [[spoiler:inheritance drama]], but he and Seigi [[spoiler:exchange sapphires]] and promise to return them "the last time they ever meet." This plays out differently in the novels, as Richard and Seigi both know Richard will be returning to Japan as soon as possible.
** Thus far, [[spoiler:the sapphires]] have not been returned.
* SecretIngredient: Seigi has to puzzle out [[spoiler:Chieko's pudding]] and experiment to discover it tastes unique thanks to muscovado so he can use it as a clue to Richard.
* SecretUndergroundPassage: Volume eight.
* SeriesFauxnale: When originally publishing the volumes, the author and editor believed volume four would likely be the last one published, and so it was written to serve as a conclusive end to the series if it was not allowed to continue. Fortunately, the series proved popular enough for the author to continue.
** This carried over into the anime adaptation, as episode ten feels very much like a finale despite the series continuing to twelve episodes.
* SharedFamilyQuirks:
** Seigi mentions that Richard and his cousins are like cookies ''made out of the same dough cut into different shapes''.
** Richard and his mother have very similar personalities and neither can cook. Seigi realizes they don't get along well because they're too similar.
* ShedTheFamilyName: Both Richard and Seigi.
* SherlockScan: Richard does this to a client in episode 4/volume two. In fairness, she asks him to do it, and he admits he's just guessing.
* SnarkToSnarkCombat: Seigi and [[spoiler:Vince.]]
* SoBeautifulItsACurse: Richard's beautiful face has given him quite a few issues as people just keep judging him by his face and not his actions. Though he may not show it very often, it is clear that such code of behavior upsets him.
** Taken to horrifying levels in volume 7 of the novels, where [[spoiler:Richard gets sexually harassed because of his beauty.]]
* SpitefulWill: Richard's great-grandfather set up an exceedingly difficult will OnOneCondition that falls on Richard and leaves the family fighting over the inheritance.
* SpotOfTea: Richard is exceptionally picky about his tea. Oddly enough, however, he didn't pick up his taste for Royal Milk Tea in Britain: He discovered it in Sri Lanka.
* StalkerWithoutACrush: Seigi's [[spoiler:biological father.]]
* TheStoic: Richard. He always keeps his calm and it is quite [[NotSoStoic rare]] to see him get angry or distressed over anything.
** NotSoStoic: When it comes to scammers.
*** In the novels and manga, Richard is less stoic and more expressive than his anime counterpart.
* StrictlyProfessionalRelationship: Richard claims this a few different times:
** Volume one, when he insists he wouldn't be upset if Seigi quit to take a different job.
** Volume three, when telling Seigi to pursue Tanimoto, and that Seigi is projecting his affections onto Richard because Richard is safe as he has no special feelings for Seigi. Seigi insists, regardless of how Richard feels, he's very fond of Richard.
** Volume four, to Jeff, when Jeff assumes Richard and Seigi are dating.
* TheSummation: Occasionally, The Case Files of Jeweler Richard remembers that it's nominally a mystery series. There are two of these:
** The Emerald Case in volume two, related to Seigi after Richard has already explained it to the cops away from him.
** The end of volume seven, performed while Richard plays poker.
* SurprisinglyGoodForeignLanguage: Richard's seiyuu, Creator/TakahiroSakurai, worked very carefully on Richard's pronunciation of his many foreign languages and even worked on giving him a British accent in Japanese.
* ThereAreNoCoincidences: Richard tells Seigi at the end of the first episode and first case, their meeting must be something like fate because of a series of coincidences that led to Seigi having a ring from his grandmother with a stone that came from the homeland of Richard's grandmother, that was refined in Europe and eventually made its way to Japan, much like Richard has an ancestor from Sri Lanka, was born in Europe, [[spoiler:sort of refined in Sri Lanka]], and found himself in Japan. [[spoiler:Of course, the pink sapphire is more meant to represent Seigi, in the end.]]
** Seigi also compares his first meeting with Richard to meeting a destined lover [[TransparentCloset if only Richard was a woman.]]
* ThereIsOnlyOneBed: Averted. There's only one room, but it has two beds. [[spoiler:Of course, since Richard doesn't like sharing bedrooms at all, this is still a vulnerable moment for him.]]
* ThickerThanWater:
** Subverted with Seigi, as [[spoiler:his biological father claims he owes loyalty to him because of their shared genetics, but Seigi and everyone else who is supporting him helps kick him out of Seigi's life again.]]
** Played straight with Richard.
* ThisIsSomethingHesGotToDoHimself: Subverted with prejudice. Seigi and Richard are both inclined to thinking this way, but the series repeatedly emphasizes that this mindset is harmful and not very smart. It's most notable in volume six/episode twelve during the Tanzanite case.
* TimeSkip: Two years pass between the bulk of volume six and volume seven.
** Volume ten also has one potentially indicating another, as the epilogue skips another two years into the future.
* TrackingDevice: Jeffrey slips a cellphone onto Seigi when they're both in London in order to find him later [[spoiler:and Richard with him.]]
* TrailOfBreadCrumbs: Richard leaves [[spoiler:a series of receipts from their dinners at Shiseido Parlour for Seigi to find in the London museum. One has a clue on it to help Seigi meet up with Richard so they can escape from Jeffrey.]]
* UnwantedAssistance: Seigi, when he shows up in [[spoiler: London]] to help Richard, who ends up having to rescue ''him'' [[spoiler:from Jeffrey.]] Richard tries to send him home immediately to get him out of harm's way. Also an UnwantedRescue.
* WhamLine: Homura to Seigi at the end of volume 3/episode 8: [[spoiler:“Isn’t Étranger going to be closed for a while starting tomorrow?”]]
* WoobieOfTheWeek: Though not every week, the first part of the series is episodic stories that each deal with a different customer and gemstone, in which Seigi and Richard find out the reasons behind why their customers come to their store, which is usually more complicated and tragic than at first glance.
* WorldTour: In volume nine, Seigi [[spoiler:travels to four different countries on two continents in the span of a week.]]
* YouAreBetterThanYouThinkYouAre: Poor Seigi.
* YouAreNotAlone: Seigi and Richard both need to be told this in act one, and in fact these situations end up creating a MeaningfulEcho.

* GentlmanSnarker: Richard.

* AdaptationDistillation: Due to the time and episode constraints of the anime, some cases from the novels are entirely left out of the anime adaptation, and the cases that ''are'' adapted are usually shortened, with some scenes cut out for brevity. For the latter, it's usually Seigi's thoughts that don't get fully adapted, as well as some less important scenes (see EveryoneCanSeeIt). That said, the anime still does a good job of adapting the novel content.

One night, while returning home from his job, university student Seigi Nakata rescues a beautiful British man named Richard Ranasinghe de Vulpian from a group of drunks. Richard is a jeweler who travels the world selling jewels to clients, who hires his Seigi to work in his Japanese shop part-time, beginning their partnership uncovering mysteries behind the jewels and customers they encounter.

One night, while returning home from his job, university student Seigi Nakata rescues a beautiful British man named Richard Ranasinghe de Vulpian from a group of drunks. Richard is a jeweler who travels the world selling jewels to clients, who hires his Seigi to work in his Japanese shop part-time, beginning their partnership uncovering mysteries behind the jewels and customers they encounter and discovering new things about themselves as well.

One night, while returning home from his job, university student Seigi Nakata rescues a beautiful British man named Richard Ranasinghe de Vulpian from a group of drunks. Richard is a jeweler who travels the world selling jewels to clients. This is the beginning of Seigi and Richard's partnership uncovering the mysteries behind the jewels they encounter.

One night, while returning home from his job, university student Seigi Nakata rescues a beautiful British man from a group of drunks. The man is Richard Ranasinghe de Vulpian, a jeweler who travels the world selling jewels to clients. This is the beginning of Seigi and Richard's partnership uncovering the mysteries behind the jewels they encounter.

One night, while returning home from his job, university student Seigi Nakata rescues a beautiful British man from a group of drunks. The man's name is Richard Ranasinghe de Vulpian, and he is a jeweler who travels around the world selling jewels to clients. This is the beginning of Seigi and Richard's partnership as the duo uncovers the mysteries behind the jewels they encounter.