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Gem Tissue

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Those gems are her actual body, and the body is a projection of the gems.

Entities that have gems or crystals that make up at least part of their own body tissue. In various works of fiction it sometimes appears as some sort of monster, alien or even on occasion a Mineral MacGuffin. It may even be some sort of Power Crystal (especially if they're mechanical in nature). The gem(s) or crystal(s) may even glow at times in the entity's life to show a reaction towards events going on in its life. Of course it's even more likely to be used due to Rule of Cool.

Carbuncle Creature is a subtrope, for creatures based on, or are, carbuncles.

Compare with Silicon-Based Life, Body to Jewel and Rock Monster.



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    Anime & Manga 
  • Neon Genesis Evangelion: The core found on angels and some Evas may apply, looking like some sort of pearl and behaving like various other crystalline materials.
  • The Gems from Land of the Lustrous are made entirely of gems with organisms called "inclusions" giving them sentience.
  • Fairy Tail: Dragon Cry has the dragon Animus, whose horns and claws look like great masses of crystal growing out of his body.
  • Future Card Buddyfight has Athora, a dragon whose body is partly covered with crystal growths that form very colorful natural plating.

    Comic Books 

    Fan Works 
  • Oversaturated World: Gems become embedded into Unicorn Aspects' foreheads as part of becoming the human equivalent of unicorns, with the gem representing the horn and allowing for spellcasting.
  • Judge Luna: Case #9: Puppet:
    "The carbuncle, the gem in a unicorn's skull at the base of her horn, was the source of her power."

    Films — Animation 
  • Atlantis: The Lost Empire: Contact with a Power Crystal changes Commander Rourke's flesh to the same glowing blue crystal. This doesn't seem to have interfered with his bodily functions, as he showed no signs of ill health until Milo hoists him up to the blimp propellers, shattering Rourke to a million pieces.

    Films — Live-Action 
  • Godzilla: SpaceGodzilla has large crystals on his shoulders and several running down his back.

  • The Camp Half-Blood Series:
    • Festus has ruby eyes.
    • Aurum and Argentum both have rubies for eyes.
    • Alcyoneus, the bane of Hades, is made up of various precious stones and metal. His own heart is stated to be composed of raw diamonds.
  • The Saga of Darren Shan: Dragons have one inside their brain. The Stone of Blood is one.
  • Inheritance Cycle: A dragon's Eldunar is stated to be a gem-like body organ.
  • Discworld: The Diamond King of the Trolls isn't just a flowery regal title. He really is made of diamond. Trolls are made of what is called metamorphorical rock, where the silicon-based substance of their bodies is predominantly one form of inorganic silicon tissue: the stuff of their being is partly down to genetic factors, but can also be mimetic of the dominant rock of their surroundings. Many male trolls are simply "Granite" or "Marble" or similar: but female trolls tend to incorporate a lot more wholly and semi-precious gemstones, ie Ruby, Beryl, et c. And, of course, all trolls have diamond teeth - the only material strong enough to grind and break down rock.
  • The Andromeda Strain: The story centers on an alien crystal that can survive in vacuum and even a nuclear blast. Tragically, it also tends to restructure the proteins in people and animals, most notably converting fluid blood into a reddish powder in its victims' veins.
  • In Michael Moorcock's The Elric Saga stories, the Chaos Lord Pyaray is a giant red octopus who stores his soul in a blue crystal embedded in his forehead.
  • In Margaret St. Clair's short story "The Man Who Sold Rope to the Gnoles," the hideous and misshapen titular creatures have brilliant green multi-faceted eyes which look like emeralds. Mortensen, the cordage salesman, dooms himself when he tries to take the Head Gnole's spare set of eyes from a display cabinet as payment for the Gnoles' rather abundant order.

    Live-action TV 
  • Star Trek: The Next Generation featured the Crystalline Entity, a massive snowflake-like creature that absorbed organic matter, converting it into energy in order to grow. Although the entity was shattered during it's second appearance, another would later appear in the Star Trek: Titan novels and Star Trek Online.
  • Stargate SG-1: The Unity are a race of peaceful crystalline life forms and normally look like blue crystals. They can assume the form of other life forms.
  • Stargate Atlantis: The crystals of planet M3X-387 may very possibly be this.

    Tabletop Games 
  • Warhammer 40,000: Several exist.
    • After being exiled into the Webway, Aurelia Malys ran into a crystalline entity and defeated it, ripping out its heart and her own and exchanging the two. Now that the crystal heart beats instead of her own, she has minor precognitive abilities and complete immunity to psyker powers, which she uses to plot the downfall of Asdrubael Vect, who caused her exile in the first place.
    • Eldar Farseers slowly turn to crystal as they age due to their connection with their Craftworld's wraithbone (the psychically-active material used by Eldar for their armor, weapons and buildings). Eventually they retire to a special area of the Craftworld where their spirit joins the Craftworld as their body continues to fuses into the wraithbone.
    • The book Xenology, while largely moved away from, details the biology of several Xenos races. It implies that anything that would clot or solidify in a human physiology crystallizes in an Eldar.
  • Dungeons & Dragons
    • A number of monsters that are made up entirely of crystals and/or gems.
      • The crysmal is a creature from the Elemental Plane of Earth that is made up of large crystals. It eats gems such as quartz, beryl (emeralds and aquamarine), corundum (rubies and sapphires) and carbon (jet and diamonds).
      • In the Forgotten Realms setting, the Red Wizards of Thay created gemstone golems made of diamonds, emeralds and rubies.
    • Dark Sun Monstrous Compendium Appendix II: Terrors beyond Tyr. The dagorran is a giant frog-like creature with green crystals growing out of the top of its back, under the neck. These crystals are the source of the creature's tracking and psionic abilities. The leader of a pack of dagorran has a larger growth of crystals than the other pack members.
    • 1st Edition AD&D supplement Fiend Folio. The carbuncle is an armadillo-like monster with a large ruby in its forehead. If the ruby is removed it will grow back over a period of several months.
    • Some Earth Genasi — Uneven Hybrids of humanoids and earth Elemental Embodiments — have crystals growing out of an otherwise humanoid body, or geode-like fissures in their flesh.
  • Exalted: The Alchemical Exalted of the Adamant Caste are described as being made of quartz crystals (in addition to their namesake metal), and have "hair" made of branching crystal/gem growth, along with ''scales" at their joints.

    Video Games 
  • Flight Rising: Skydancer dragons have crystals on their foreheads.
  • RuneScape:
    • The elf goddess Seren is literally a living crystal.
    • Several golems, such as the Jade Golem, are made out of gemstone.
  • Godzilla Unleashed: Along with SpaceGodzilla (see above) there is also Krystalak, who has his entire back covered in crystals and even has a beard made of them.
  • Pokémon: Several examples exist such as Carbink and Diancie, though the Lake Trio are probably the most famous since their gems were integrated into their games story. Others such as Dialga and Palkia likely also apply based off of appearance.
  • Spore: Any creature with the Mackne, Derma Bark, Baublewarts, Jemite and/or Stealing Crystals parts probably apply.
  • Kid Icarus: Pyrrhon has a green jewel on his forehead.
  • Dark Souls has the semi-crystallized undead populating the (mainly) Duke's Archive, who have magical crystals sticking out of their bodies that give them various sorcerous abilities. Across the franchise's three games, Crystal Lizards have also been a source of rare Titanite crystals, being tiny Fragile Speedsters... until the third game had some consume souls and grow enormously into crystalline monsters with an appetite for souls.
  • Bloodstained: Ritual of the Night is set in a world where a wide-spread demonic affliction causes the victims' flesh to randomly crystallize, often forming unsettling stained glass-like shapes. The heroine of the game is also afflicted and has multiple patches of crystal on her body, most prominently a rose-like one over her heart.
  • Final Fantasy XIII: While the physiology of this process is never exactly explored in detail, when the l'Cie in the Final Fantasy XIII mythos make their Faustian Bargain, a small crystal forms somewhere inside their bodies, that allows them to manifest their superpowers and grows larger as they become stronger (this serves as the in-universe justification of the Crystarium subsystem). Eventually, when the l'Cie fulfill their end of the deal they made, the crystal grows so large, it completely encases them, freezing them in an eternal stasis.
  • Final Fantasy XIV: The full-blooded Garleans have a small pearl like growth in the middle of their forehead, called a Third-eye.
    • The Crystal Exarch in the Shadowbringers expansion is slowly turning to crystal due to his affinity with the Crystal Tower of the Allagans. One arm, most of his neck, and part of his cheek are already converted - any other parts are hidden under his robe. His mobility is unaffected.
  • Command & Conquer
    • Initiates in Command & Conquer: Renegade have a few tiberium crystals growing out of their shoulders
    • Command & Conquer: Tiberian Sun:
      • The Forsaken are Mutants who have been altered by exposure to Tiberium to the point they have Tiberium crystals growing out of their skin.
      • The Tiberian Fiend neutral unit is a huge dog with tiberium crystals growing out of its back. It can shoot them at your troops as well.
    • In the Kane's Wrath expansion to Command & Conquer 3: Tiberium Wars, Scrin Ravagers have a cluster of tiberium crystals growing out of their backs.
  • In City of Heroes, the Devouring Earth have crystal monsters, ranging in size from the shards of once-defeated crystal monsters to the giant Crystal Titan.
  • Nioh: Several Yokai have chunks of Amrita growing from their bodies.
  • In Gears of War 4, the Scions, a.k.a. evolved Locust, have crystals of some sort growing out of their bodies. As does the "Swarmak" (an evolved Brumak).


    Western Animation 
  • Steven Universe:
    • Steven has his mother Rose Quartz's gemstone where his belly button would be.
    • The Gems and Gem Monsters may also apply depending on one's point of view. Technically, their bodies are less "made of gems" and more Hard Light constructs around a central core that is a gem. As a result, the gemstone embedded in some part of each Gem's anatomy is in a sense their "actual" body.
  • Adventure Time has the Crystal People, who live in the Crystal Dimension. They are made of crystals.
  • SWAT Kats: Episode "Chaos In Crystal" sees convict Rex Shard misuse a gem extractor in the prison mine, which transmutes exactly half his body into greenish crystal. Shard is able to crystalize anyone or anything he touches, and when Shard breaches the prison's wall, his whole body converts to living crystal that's impervious to most weapons.

    Real Life 
  • Depending on who you ask, coral is this.
  • Trilobites, an extinct class of arthropods distantly related to modern horseshoe crabs, used transparent calcite crystals as lenses in their eyes.


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