History Main / CrystalWeapon

** Downplayed with the Mesoamerican [[https://en.wikipedia.org/wiki/Macuahuitl macuahuitl]. While the bulk of the weapon is made out of wood, obsidian blades are inserted along the sides. Records from conquistadores claim the obsidian was sharp enough to behead a horse. However, such a weapon is DifficultButAwesome; The obsidian blades are brittle, dull easily, and often shattered on impact with Spanish steel or other macuahuitls, requiring them to be replaced from time to time.

* While not technically a weapon, [[https://en.wikipedia.org/wiki/Obsidian#Current_use Obsidian is being used to make scalpel blades]] which may be approved for use on humans later. Obsidian being Mafic Lava that has instantly solidified upon contact with ocean water, before minerals can form basalt, where the internal minerals are around 1mm across. As Obsidian is also known as Volcanic Glass, this also counts as a GlassWeapon.

* ''ComicBook/CrystarCrystalWarrior'': Crystar and Warbow use a crystal sword and crossbow respectively.

* The Remco line of Crystar toys, which features the heroic Prince Crystar and his fellow crystalline heroes with appropriate crystal weapons versus Crystar's evil brother, Moltar, and his molten minions.

* The "Dragonborn" extension of ''VideoGame/TheElderScrollsVSkyrim'' includes a form of enchanted ice called "stahlrim". This can be used to create very strong armor and weapons. Since stahlrim is a form of ice, weapons and armor made from it have a special affinity for frost-based enchantments.

& ''Literature/TheLostMetal'': Prasanva's SymbioticPossession as an Aetherbound lets him [[ThePowerOfCreation create]] crystal items from the bud in his hand, including [[SpontaneousWeaponCreation weapons]] -- or, with enough power to call on, a twelve-foot suit of heavily-armed PoweredArmor.

[[folder: Films -- Animation]]
* ''WesternAnimation/KungFuPanda3'': Kai uses jade to make both knives and "jombies" in the forms of dead kung fu masters. Thematically, this emphasizes his blasphemous nature, as in Chinese culture, jade is a sacred material and should ''not'' be used in combat.

[[folder: Gamebooks]]

* ''Webcomic/GrrlPower'': [[http://grrlpowercomic.com/archives/1377 Dabbler]] uses a sword made of "Auracite. Crystallized Aether taken from an Aetheon throne'',[["Not the one in New Jersey... ''Old'' Jersey, obviously.[[/note]] which is very good at letting her channel magic during fights.

* ''Literature/FightingFantasy'': ''Literature/CreatureOfHavoc'' includes a crystal club that can defeat any enemy with [[SingleStrokeBattle one blow]] but [[LimitedUseMagicalDevice shatters after being used]]. It happens to be the only way to [[spoiler:defeat the BigBad by destroying the portal to his PocketDimension]].

* ''WesternAnimation/KungFuPanda3'': Kai Leng uses jade to make both knives and "jombies" in the forms of dead kung fu masters. Thematically, this emphasizes his blasphemous nature, as in Chinese culture, jade is a sacred material and should ''not'' be used in combat.

* In ''Anime/TenchiInTokyo'', Tenchi is given a crystal sword with six magical gems embedded in it. As he [[IJustWantToBeNormal just wants to be normal]], he takes the gems out and just gives them to his harem.

* Based on the 1982 Remco action figures, Marvel's 1983 ''Saga of Crystar'' comics had main characters Crystar and Warbow uses a crystal sword and crossbow respectively. These characters would return again in the 2010s with Marvel's [[ComicBook/SecretWars2015 Weirdworld]] miniseries.

[[folder: Animated Films]]
* Kai Leng, from the third ''WesternAnimation/KungFuPanda'' movie, uses jade to make both knives and 'jombies' in the forms of dead kung fu masters. Thematically, this emphasizes his blasphemous nature, as in Chinese culture, jade is a sacred material and should ''not'' be used in combat.

* In ''Literature/TheWheelOfTime'', the crystal sword Callandor is a major symbol of the [[TheChosenOne Dragon Reborn]], and is an [[MadeOfIndestructium indestructible]] AmplifierArtifact of terrifying power for good measure. Oddly, its design was deliberately flawed in ways that make it dangerous to wield and [[spoiler:enable it to channel the [[TheAntiGod Dark One]]'s own power against him]].
* The ''Literature/FightingFantasy'' gamebook ''Literature/CreatureOfHavoc'' includes a crystal club that can defeat any enemy with [[SingleStrokeBattle one blow]] but [[LimitedUseMagicalDevice shatters after being used]]. It happens to be the only way to [[spoiler:defeat the BigBad by destroying the portal to his PocketDimension]].
* ''Literature/SilverOnTheTree''. Will Stanton and Bran journey to the Lost Land to retrieve the crystal sword Eirias, which is necessary to fulfill the prophecy of the destruction of the Dark.
--> ''"And where the Midsummer Tree grows tall, by Pendragon's sword the Dark shall fall."''
* ''Literature/TheElricSaga'' story "To Rescue Tanelorn". The Olab are reptilian creatures that wield large clubs. The clubs have discs a foot in diameter made of crystalline rock embedded in them. The Olab swing their clubs to fling the crystal discs at opponents.
* In the science fiction Literature/LiadenUniverse, protagonist Val Con has a crystal knife made on an alien world by the Knife Clan of Middle River, which is nearly indestructible and has an AbsurdlySharpBlade. The Knife Clan is said to grow the blades in caves over a period of decades, with considerable care and attention required for them to come out with the required characteristics.
* Adrienne Martine-Barnes wrote a series of fantasy novels revolving around four {{Cool Sword}}s, the second of which was the Crystal Sword.

* In ''TabletopGame/{{Stormbringer}}'' and later revision ''Elric!''. Olab throw crystal disks at their opponents using a club-like launcher.
* The Gnomekin warriors of ''TabletopGame/{{Talislanta}}'' wield shortswords made of crystal.
* In ''TabletopGame/{{Warhammer 40000}}'', one of the weapons used by Drukhari Wych cults is the Hydra Gauntlet, which goes on the forearm and contains a strange, semi-sentient extraplanar crystal. On the mental command of the user, they extend profusions of extremely sharp crystalline shards that can viscerally shred armour and flesh alike.

* ''VideoGame/TheBardsTaleTrilogy'' has a Crystal Sword for the fighter classes.
* In ''VideoGame/DiabloII'', a Crystal Sword is a fairly basic, low-leveled weapon that's rather frail. It's one of the first weapons that has six {{socket|edEquipment}}s available for buffs or other magical effects to be added on to it though, making it somewhat popular for strategies involving magic or runes.

* ''VideoGame/{{Tibia}}'' has the Crystalline Axe, which is made of red crystal for a blade and is one of the strongest one-handed axes, the Crystal Wand, which is obtained via quest, the Crystal Sword, a weak weapon for beginner knights, the Crystal Crossbow (and Crystal Arrows), a powerful weapon for high-leveled paladins, and the non-usable quest item the Crystal Cannon.

* Crystal weapons in ''VideoGame/DarkSoulsI'' are extremely powerful but have low durability and cannot be repaired by any means. Like most things crystal in the game, they are ultimately products of Duke Seath the Scaleless' research, who also invented several sorceries that ''temporarily'' turn regular weapons into crystals.
* ''VideoGame/RecettearAnItemShopsTale'' has a Crystal Sword, which is "forged of pure crystallized energy".
* In ''VideoGame/{{Minecraft}}'' you can make diamond weaponry and armor, which is quite powerful.
* ''Videogame/SpaceEmpires V'' uses a sci-fi variant; accessing the Crystallurgy branch of the TechTree will allow you to build spacecraft fitted with crystalline armor and armed with crystal shard torpedoes.

* ''VideoGame/DungeonsAndDragonsOnline'' has a two-handed crystal sword named Terror, which can cast a spell three times a day, has the ability to inflict the "Nightmare" status condition on enemies, and forces opponents to roll a save against fear when it's used against them.
* ''Franchise/FinalFantasy'' has various Crystal armaments and armour throughout the series, typically as a sword but sometimes as other weapons.
* In ''VideoGame/TheBardsTaleTrilogy'', diamond weapons are the strongest equipment you can buy from a store. While they'll be outclassed by enchanted items you might find, because class-based equipment restrictions they continue to be useful to the end of the game.
* ''VideoGame/AvencastRiseOfTheMage'': {{Magic Sta|ff}}ves come in a wide variety of materials, including solid diamond. Given that one of the magical disciplines uses the staff extensively as a melee weapon, it's fortunate that the game uses UnbreakableWeapons.
* ''VideoGame/{{Bravium}}'' has the Crystal Sword, the Emerald Sword, Emerald Axe and Crystal Hammer: all of them have less durability than the other weapons, but have nice bonuses: the first boosts your mana and mana regeneration, the Axe curses enemies and the hammer, while doing no actual physical damage, deals magic damage to a spread area, hitting multiple enemies and dealing massive damage to armored enemies and ghosts. The Weapon + Ice combo nets you a set of shield and hammer made of transparent diamond.

[[folder:Web Comics]]
* In ''Webcomic/GrrlPower'', [[http://grrlpowercomic.com/archives/1377 Dabbler]] uses a sword made of "Auracite. Crystallized Aether taken from an Aetheon throne'',[["Not the one in New Jersey... ''Old'' Jersey, obviously.[[/note]] which is very good at letting her channel magic during fights.

* The crystal swords, Star Sword and Power Sword in ''WesternAnimation/BlackStar''.
* Doctor Thaddeus Dare is the villain of the ''WesternAnimation/LoonaticsUnleashed'' episode "Going Underground." Doc Dare steals the Jade Serpent crystal, with which he pulls entire precincts of Acmetropolis into his subterranean domain. At one point, he draws raw power from the crystal into his BoomStick, from which he launches a DeathRay at the heroes.
* The main character, many of the protagonists and all of the antagonists of ''WesternAnimation/StevenUniverse'' are living crystal beings who not only use crystal-based technology and weaponry, but for a good part may be considered living weapons themselves.

* In ''Webcomic/GrrlPower'', [[http://grrlpowercomic.com/archives/1377 Dabbler]] uses a sword made of "Auracite. Crystallized Aether taken from an Aetheon throne'', which is very good at letting her channel magic during fights.

* Doctor Thaddeus Dare is TheVillain of the ''WesternAnimation/LoonaticsUnleashed'' episode "Going Underground." Doc Dare steals the Jade Serpent crystal, with which he pulls entire precincts of Acmetropolis into his subterranean domain. At one point, he draws raw power from the crystal into his BoomStick, from which he launches a DeathRay at the heroes.

* In Chaosium's ''Stormbringer'' and later revision ''Elric!''. Olab throw crystal disks at their opponents using a club-like launcher.

* ''VideoGame/RuneScape'': The [[OurElvesAreBetter elves]] make pretty much everything out of crystal (probably because their goddess Seren is [[GemTissue crystalline in nature]]), including weaponry. The page image is concept art for several crystal weapons, which, in-game, are powerful (and in the case of bows, do not need ammunition) but will eventually degrade back into the crystal seed they were made from, and will have to be repaired using the elvish art of crystal singing.