History Main / CrystallineCreature

** Glimmet and its evolved form Glimmora are Rock/Poison type Pokémon that resemble blue crystal flowers. It is said that they have a link to Tera jewels, items used for the next example...

* ''Literature/{{Discworld}}'': [[OurTrollsAreDifferent Trolls]] are mostly {{Rock Monster}}s, but their [[EthnicityMonarch King]] "Mr. Shine" is made of diamond, making him much [[AuthorityEqualsAsskicking tougher]] than a normal troll and also giving him the ability to regulate his body temperature and keep his brain cold enough to function efficiently.

** ''VideoGame/PokemonScarletAndViolet'' introduces Terastallization, a process which covers Pokémon in a crystalline skin and a massive crown-like structure representing their Terastal Type, gives them a potential change in their typing, and provides an even more powerful STAB bonus if their Terastal Type matches their original Type.

** ''ComicBook/NewXMen'': This run is where Emma Frost gained the ability to transform into organic diamond. This form grants her increased strength and durability at the cost of not being able to use her telepathy in that state.

** ''ComicBook/XFactor2006'': The BadFuture arc introduces Ruby Summers, the daughter of Cyclops and Emma Frost. In addition to having EyeBeams like her father[[note]]Although hers are black instead of red[[/note]], Ruby can transform her skin into

** ''ComicBook/XFactor2006'': The BadFuture arc introduces Ruby Summers, the daughter of Cyclops and Emma Frost. In addition to having EyeBeams like her father[[note]]Although hers are black instead of red[[/note]], Ruby can transform her skin into organic ruby similar to how her mother transforms her skin into diamond. Ruby stays in her ruby form to preserve her youth, allowing her to look like she's in her 20s despite being in her 80s.

* ''LightNovel/TheSorcerersReceptionist'': The "Blanc Lykos" species are sapient wolves who can turn their bodies to crystal at will. This ability makes defense a lot easier for them, but they don't use it often because it makes them clumsy.

* ''Videogame/EndlessSpace'': The Harmony are a race of crystal {{Starfish Alien}}s with a [[HiveMind collective consciousness]], which was shattered by contact with [[ImportedAlienPhlebotinum Dust]]. Their ships are [[EldritchStarship massive crystal formations which are grown from the population]]. They return as a minor faction, the Silics, in ''Videogame/EndlessLegend'', who farm great fields of crystals in hidden caverns and bless promising specimens with sapience to create new members of their species.

* ''VideoGame/MightAndMagic VIII'' has these in, you guessed it, the Great Crystal (though they also show up in prisons of [[spoiler:Elemental Lords]]. They come in two varieties: Crystal Guards and Crystal Dragons. They are some of the toughest monsters of the game and the strongest [[DemonicSpiders Ruby Dragons]] can wipe out even high-leveled parties as they have tons of health and deal Energy type of damage that cannot be resisted.

** ''VideoGame/PokemonScarletAndViolet'' indroduces Terastallization, a process which covers them in a crystalline skin and a massive crown-like structure representing their Terastal Type, gives them a potential change in their typing, and provides an even more powerful STAB bonus if their Terastal Type matches their original Type.

** Regice is a {{golem}} made entirely of sharply faceted ice, giving it the appearance of blue crystal.

* ''ComicBook/GuardiansOfTheGalaxy'': Like Iceman, Martinex of the orginal team was an ice-person, as was his entire civilization of human colonists. They'd been genetically engineered that way to live on Pluto.

* ''Film/TheLastJedi'': The Vulptex from Crait resemble crystalline foxes. Poe Dameron refers to them as "crystal critters."
* The Creator/ShawBrothers movie ''Film/PortraitInCrystal'' deals with a mysterious assassin in the martial world who is a crystal statue of an ancient, vengeful warrior, under the control of an evil demon brought to life in the presence of human blood. [[spoiler: Or that's what it seems, but the truth is the statue legend is fabricated by a ''real'' murderer who's using the legend to hide his activities]].

* ''Franchise/StarWarsLegends'': The Shard are a species of living, sapient crystals resembling large clusters of quartz-like spears, pulsing faintly with the internal activity of their "brains". In their natural state, they're completely immobile and grow in colonies of thousands around their homeworld's hot springs, reproduce by growing new Shards from their bodies, and can live for centuries before succumbing to erosion. They can only perceive the world through electromagnetic reception, which they also use to keep in contact with all other members of their colony. Their electromagnetic senses and communications give them an instinctive understanding of technology, and they can gain mobility and additional senses by allowing themselves to be implanted within droid bodies.

* ''Literature/FightingFantasy'': Crystal Sentinels are golems made of quartz and rubies to serve as the PraetorianGuard for higher-ranking forces of evil, such as Sharella the Great Witch in ''Literature/CavernsOfTheSnowWitch'' and Bythos the Lord of the Abyss in ''Literature/SlavesOfTheAbyss''. They are extremely durable, have SKILL stats in double digits, and cannot be harmed by edged weapons like swords or axes -- adventurers will need to collect a [[DropTheHammer warhammer]] in order to smash these enemies apart in combat, or else die in an unwinnable battle.

* ''Literature/HowlOfTheWerewolf'' has a glass knight come to life and attack the player in the Tower of Maun. This is a ShoutOut to ''Film/YoungSherlockHolmes'', with the accompanying illustration exactly resembling the movie's knight.

Subtrope of RockMonster (which covers all beings made entirely out of rocky materials) and GemTissue (which covers all cases where at least a portion of a living being's body is made out of or contains gemstones). This can often overlap with ElementalEmbodiment, as it's not uncommon for elementals associated with earth or crystals to take this appearance. Overlap also occurs with SiliconBasedLife when the creature is made from a silicate mineral, such as quartz or garnet.

* ''Manga/LandOfTheLustrous'': Like real minerals, when the Gems are formed their bodies are extremely rough and angular, needing to be polished and cut to achieve their "lustrous" appearances. Taken UpToEleven by [[spoiler:Phos]] who is so badly damaged after being shattered they are just a mess of cracks and jagged pieces, barely holding themself together. However, they refuse to be repaired and their new, disturbing appearance is used to highlight their [[spoiler:FaceHeelTurn]].

* ''VideoGame/{{Pokemon}}'':

* ''Anime/FutureCardBuddyfight'': In its default form, Gemclone looks like a tentacles mass of jagged lavender lavender crystals until he copies another monster's SuperMode. When it does, it turns into a crystalline blue PaletteSwap of said monster. Then there's its [[OneWingedAngel Origin Breaker]] form, which looks like a mashup of Bal, Jackknife, and Abygale with each section being made of crystals of different colors.

* ''VideoGame/{{Temtem}}'': Gyalis looks like a giant mantis made of polished red crystals.