Orichalcum is a legendary precious metal that was mentioned by Creator/{{Plato}} as used in {{Atlantis}}. Orichalcum appears many other places in classical Greek and Roman writings (for example, the Homeric Hymns assign gold and orichalcum ornaments to Aphrodite) [[AdvancedAncientAcropolis but it's the Atlantis reference]] that it's remembered for.

It has since been commonly used in fantasy literature and games as a type of {{Unobtainium}}. The term is Greek for "golden stone" and originally meant "mountain copper" or "mountain metal", though nobody is sure exactly what it was supposed to be. Possibilities range from an alloy of normal metals to a completely fantastic material, though the most common perception is that it is brass.

For some reason, translators often fail to recognize the word in media of Japanese origin, leading to misspellings like "orihalcon".

Compare {{Mithril}}, Adamantium, and ThunderboltIron. Subtrope of FantasyMetals and/or GreenRocks.
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!!Examples:

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[[folder:Anime and Manga]]
* In ''{{Slayers}}'', as "Orihalcon". It has turned up in both the anime and manga, misspelled the same....
** In this series, orihalcum's schtick is magic resistance. The metal can block any spells.
* In ''NadiaTheSecretOfBlueWater'' Nadia's pendant is eventually revealed to be made of orichalcum (and associated with Atlantis).
* Used in ''Anime/YuGiOh'' in association with Atlantis, as "the Orichalcos". It was a mysterious glowing, blue, rock-like substance that fell from the sky 10,000 years ago and the ancient Atlanteans used it to create a {{Magitek}} {{Utopia}}, but it was also TheCorruption and turned nearly everyone [[BalefulPolymorph into monsters]] and TheGoodKing, [[BigBad Dartz]], into an [[{{Immortality}} Immortal]] BrainwashedAndCrazy EvilSorceror and OmnicidalManiac, and pressed him into unleashing an EldritchAbomination called the Leviathan to [[TheEndOfTheWorldAsWeKnowIt destroy the world]] and [[UtopiaJustifiesTheMeans create Paradise from the ruins]]. It is ultimately the reason Atlantis sunk beneath the waves.
** The members of DOMA/DOOM all had rings with bits of Orichalcum in them and used the Seal of Orichalcos Magic Card, which lets you have double the normal monsters on the field, grants each of them an extra 500 Attack Points... and creates an unbreakable forcefield aound the duelists based on the Seal, and if you lose a duel inside the Seal, your soul gets eaten by the Leviathan. Dartz himself has two more versions of the card that grant additional effects, as well as an entire deck of monsters and traps themed on the Orichalcos. The only way to break the Seal is is to use a piece of Orichalcum, hence the rings they use, although it seems like they can only be broken from the ''outside'' so they are only good for ending someone else's Duel.
** Well, hitting it really hard with a Millenuim Item works too...for a [[HeroicSacrifice given definition ]] of "works".
** ''Anime/YuGiOhGX'' has an unrelated character with an "Eye of Orichalcum" embedded in his face.
* ''TransformersArmada'' has the Mini-Cons from a sunken city called the Orichalcum (translated as "Olihalicons").
* The warriors of Athena and the knights of Poseidon in ''SaintSeiya'' wear orichalcum armor.
* The orihalcon dagger of Natsuki in ''HyperPolice'' (translated as "oriharucon").
* In ''Manga/BlackCat'' the Chronos Guardians use weapons made of orichalcum.
* "Orihalcon" is sought by the Atlanteans in ''"TheWhiteWhaleOfMu''.
* The weapons and body armor used by Yu Ominae, the US Army's Machineer's Platoon and the Trident Corporation in ''Manga/{{Spriggan}}'' are made of "orihalcon" or "omihalcon".
* In the second season of ''Anime/TheMysteriousCitiesofGold'', it is revealed that all of the Mu artifacts we've seen (including the city) aren't actually made of gold, but Orichalcum. This does solve the problem of why an advanced race would make an aircraft out of an extremely heavy and brittle metal with a low melting point.
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[[folder:Comics]]
* Orichalcum is retrieved from Atlantis in the opening scene of ''Comicbook/IronMan Noir'', in which it's a MacGuffin power source.
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[[folder:Film -- Animation]]
* The [[PowerCrystal Mother Crystal/Heart of Atlantis]] from Disney's ''Disney/AtlantisTheLostEmpire'' is actually implied to be made of Orichalcum.
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[[folder:Literature]]
* A metal used by the Atlanteans in Creator/ENesbit's ''Literature/TheStoryOfTheAmulet''.
* In ''Decipher'' by Stel Pavlou, also used in association with Atlantis.
* In the ''PendragonCycle'' it is a substance used in Atlantis.
* Appears in ''{{Dinotopia}}'' as a substance used in a piece of a key, first thought to be bronze.
* In JohnCWright's ''[[Literature/TheGoldenOecumene The Golden Transcedence]]'', taking place in the Golden Oecumene, a projected future includes more Oecumenes, about other star systems. One is the Orichalcum Oecumene.
* Discovered by, of all people, {{Biggles}} (who then loses it again in a landslide) in a short story from the (perfectly canon, surprisingly) book "Biggles, Charter Pilot".
* Subtly name-dropped in the ''Literature/CiaphasCain'' series, where the company is deployed to an ice planet called Simia Orichalcae... yep, "Brass Monkey".
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[[folder:LiveActionTV]]
* In ''Series/GoGoSentaiBoukenger'' one treasure from Atlantis is first thought to be made of orichalcum. This treasure turns out to be the Vril, an artifact that gathers information from nearby objects to duplicate them in order to eventually replace the human race.
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[[folder:TabletopRPG]]
* In ''{{Exalted}}'', Orichalcum is a magical metal associated with the Solar Exalted. The manufacturing process involves smelting gold in the heart of a volcano while using an elaborate array of mirrors to shine distilled sunlight on the metal (why? [[RuleOfCool Because it's Exalted]]).
* Orichalcum appears in ''TabletopGame/{{Shadowrun}}''. It's a very rare metal, known for reacting and conducting magic. It is used to create various magical foci, especially weapon focus. It has also appeared in the Shadowrun video games.
** Also appears in ''{{Earthdawn}}'', where it's the result of fusing the five True Elements.
* Appears in ''TabletopGame/MageTheAwakening'', where it is produced by magically passing gold between the material world and Twilight until most of its substance is gone. It has no overtly magical properties of its own, but can be combined into alloys that can then hold powerful enchantments. The only one given is ''thaumium'', which absorbs magic.
* The ''TabletopGame/{{Nephilim}}'' RPG has "orichalka" as a material from Saturn, used in the fight against the Nephilim in Atlantis.
* ''ArduinGrimoire'' has a spell "Gandolyn's Gates", a spell which traps a person in a tower of orichalcum.
* In the [[TabletopGame/D20Sytem D20]] book ''Advanced Gamemaster's Guide'' from Creator/GreenRonin, it is a material to make weapons and armor.
** ''MutantsAndMasterminds'' from the same company, has it as a golden metal from Atlantis, whose secret is lost.
* Appears in the Immortals Handbook - EPIC BESTIARY: Volume One by Eternity Publishing as a red metal found in the heart of dead stars. The metal is so insanely dense and heavy that it has to be diluted with adamantine in order for even regular deities to be able to carry weapons made from it.
* In 4th Edition TabletopGame/DungeonsAndDragons , there is a type of metallic dragon called an Orichalcum (or Orium) Dragon obsessed with finding the secrets and reviving the glories of past civilizations.
* Orichalcum in ''{{GURPS}}'' looks just like bronze but it much stronger and automatically makes blades forged from it extremely sharp.
** It's also a room-temperature superconductor, should anyone come along who knows how to use that sort of thing, as noted in the ''InfiniteWorlds'' sourcebook.
** In the ''Atlantis'' sourcebook it's also an "etheric resonator" if local physics allows such a thing, enabling a {{Steampunk}} campaign to keep the "advanced power source" concept without moving too far from the paradigm. In either case, it also has "additional secondary useful properties" allowing its use as "an [[AppliedPhlebotinum all-purpose technobabble keyword]]".
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[[folder:Video Games]]
* Orichalcum is a [[InterchangeableAntimatterKeys central plot device]] and PlotCoupon in ''IndianaJonesAndTheFateOfAtlantis'', a classic LucasArts AdventureGame which [[WhatCouldHaveBeen never got made]] into Indy 4. It's used as fuel for the [[AdvancedAncientAcropolis Atlantean's abandoned]] [[LostTechnology ancient artifacts]] scattered around the globe, which Indy must dig up. [[{{Ghostapo}} The Nazis want it]] for [[strike:[[ILoveNuclearPower nuclear power]]]] because it [[spoiler:[[PoweredByAForsakenChild powers the]] [[AGodAmI God Machine]] [[BeneathTheEarth under Atlantis]]]].
* Appears as an ItemCrafting material in the ''StarOcean'' series. In the first two games, Orichalcum is a strong metal which can make some very good weapons, armor and accessories. In the third game, finding the right Inventors to produce Orichalcum reliably is the functional in-game equivalent to [[DiscOneNuke splitting]] [[GameBreaker the atom]].
* Also used in ''ShiningForceIII'' as material the blacksmith can use; it's the best material, beating out {{Mithril}}.
** And in ''ShiningSoul II'' used to make Ice and Holy elemental equipment at the blacksmith.
* RomancingSaGa3 the dolphin statue in Vanguard is made of it; in enhances water magic which allows the city to move freely in the ocean.
* A type of pin used for trading in ''VideoGame/TheWorldEndsWithYou''.
* Also appears in ''VideoGame/GoldenSun: The Lost Age'' and ''VideoGame/GoldenSunDarkDawn'', as an ItemCrafting material called Orihalcon (that also RandomlyDrops), used for getting one of the game's {{Infinity Plus One Sword}}s. Strangely enough, you can't find any in Lemuria, the game's Atlantis equivalent.
* Appears in the ''Franchise/FinalFantasy'' series as items made of the material, with various spellings. An orichalcum knife is a very strong item.
** The MMORPG ''VideoGame/FinalFantasyXI'' has it available in the form of ore to make items.
** Also in ''VideoGame/FinalFantasyCrystalChronicles''.
* Shows up in a couple of the ''KingdomHearts'' games as an ItemCrafting material. ''VideoGame/KingdomHeartsII'' even has a stronger variety called "Orichalcum+" that is needed to make the [[InfinityPlusOneSword Ultima Weapon]]. Said weapon requires every piece of "Orichalcum+" in the game.
** And you still need to cheat by using a special material that halves the material cost.
* Used to create [[EverythingsSparklyWithJewelry jewelry]] in some of the HarvestMoon games.
** Also appears as a rather worthless item in Harvest Moon DS.
* Appears in the {{MMORPG}} ''VideoGame/MapleStory''. Of note, it is called 'Orichalcon' in-game because Orichalcum has the syllable 'cum' in it, which is [[ScunthorpeProblem censored out]].
* And in ''LegendOfMana''.
* And ''FlyFF'', which calls it "Shining Oricalkum."
* Appears in ''VideoGame/KirbySuperStar'' as the treasure "orihalcon".
* In ''[[VideoGame/CityBuildingSeries Master of Atlantis - Poseidon]]'' as "orichalc". It is used as a monument decoration, as well as fuel for the deadly Atlantean fire.
* "Orichalkos" is all over the Atlantean civilization of the ''VideoGame/AgeOfMythology'' expansion pack, "The Titans". It is used to explain some of their more advanced technology (like the Fire Siphon), a common mentioned material of advanced upgrades and the strongest material the Atlanteans can make their walls. The metal is also mentioned to magically become very lightweight after being quenched in seawater.
* ''VideoGame/TacticsOgre'' has it in the form of a sword translated as "Oricon". Also as "Oracion" in Knight of Lodis.
* The Orichalcum is Sophitia's legendary weapon in ''SoulCalibur II'' and can be purchased in ''SoulCalibur III''.
* The Sword of Kings in ''VideoGame/DragonQuestIII'' is made of the metal "Oricon".
** It is also used for Dai's sword in ''DaiNoDaibouken''.
** It is also an ItemCrafting material in ''VideoGame/DragonQuestVIII''.
** The near-unbreakable shield in ''VideoGame/DragonQuestSwords'' is a SPOON made of Orichalcum, but due to its obviously small size which can't be increases and that if you can block as accurately with any other shield as you can with the spoon, they'll be just as durable, it's not nearly as useful as it'd initially seem.
** It makes a comeback in ''VideoGame/DragonQuestIX'' as one of the greatest, yet rarest alchemy ingredients. To give you a scope on how rare it is, every other mineral in the game can be found as RandomlyDrops or by finding them on the ground in certain spots of the world map. {{Orichalcum}} is found NOWHERE in the world and the ''only'' monsters that drop them do so with a 1/256 chance, which is as rare as it gets in this game. Fortunately, when you ''do'' get your hands on some, you can use it for some of the best gear in the game, such as the Sage's Stone, which heals your entire party, as well as [[ContinuityNod Erdrick's gear]], which is the best gear in the game barring the [[InfinityPlusOneSword Uber-gear]].
** In ''VideoGame/DragonQuestHeroesRocketSlime'', both orichalcum and orichalslime are used as weapons and alchemy ingredients.
** The general rule of thumb in ''VideoGame/DragonQuest'' is that if it's made of Orichalcum, it either kicks three different kinds of ass or is a flat-out GameBreaker.
* Used as a power source in ''VideoGame/DevilMayCry III''.
* The MMORPG ''RagnarokOnline'' used "Oridecon" as a crafting material.
* The Grim Angels in ''VideoGame/DeptHeaven'' use weapons made of this material.
* ''VideoGame/CityOfHeroes'' and ''City of Villains'' have it as salvage.
* ''VideoGame/TechRomancer'' has a mecha, G-Kaiser, made of the material "Orihalconium".
* ''Franchise/TheElderScrolls'' has a tower made of "orichalc", which was on a sunken continent named Yokuda.
** As of ''[[VideoGame/TheElderScrollsVSkyrim Skyrim]]'', orichalcum is a blackish-green metal used to make Orcish armor and weapons, which in previous installments was just high quality steel equipment. Such items are known for their green tint and being "ugly and strong, like those that forged them."
** Oddly, "[[OurDwarvesAreDifferent Dwemer]] Metal" better fits the traditional description of orichalcum - it's a lustrous red-gold, an ancient and advanced civilization used it to make all their wonders, and [[LostTechnology it isn't found naturally, forcing players to smelt down items from Dwemer ruins for ingots.]]
* ''VideoGame/SuperRobotWars'' has a number of mecha and weapons made of "Orichalconium" (most famously Cybuster) or the stronger "Zol-Orichalconium" alloy ("Z.O." for short). In the [[VideoGame/SuperRobotWarsOriginalGeneration Original Generation]] games, it plays the same role as [[Anime/MazingerZ Alloy Z and Super-Alloy Z]].
* Used for ItemCrafting in ''VideoGame/ValkyrieProfile''.
* Used for both the main character's weapon and the bosses' weapons in ''VideoGame/EOEEveOfExtinction''. Hilariously awkwardly pronounced in-game as "[=OriKILLUM=]" and "[=oRICKulum=]."
* Available by VideoGameStealing in ''VideoGame/CastlevaniaCurseOfDarkness'' as an ore used to forge powerful items.
* Used for dwarven crafting in ''{{Lineage 2}}''.
* A more powerful substitute for bronze in ''VideoGame/TitanQuest''.
* ''{{Tibia}}'' has a magic item called the Orichalcum Pearl.
* ''BlobWars'' has a quest to collect 25 boxes of orichalcum beads.
* ''VideoGame/EndlessOcean: Blue World''-The orichalcum ingot is one of the legendary treasures, and is the most expensive non-treasure chest salvageable item (and the fourth most expensive overall).
* In ''VideoGame/ArcanaHeart'', Orichalkos is the arcana of metal (and a huge frickin' dragon).
* Orichalcum is used to craft either Seth or Kaim's Ultimate Weapon in LostOdyssey.
* Appears as a crafting material in ''VideoGame/DragonAgeII''.
* Appears as a crafting material in the MMO ''{{RIFT}}: Planes Of Telara''.
* The [[spoiler:Great Sacred Treasure]] in ''KidIcarusUprising'' is stated to be made of orichalcum.
* ''{{Terraria}}'' features Orichalcum as an alternative to [[{{Mithril}} Mythril]], it's appearance is pink and a full set of it's armor with any of the helmets causes pink petals to strike an enemy you hit.
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[[folder:WebComics]]
* Appears [[http://mindmistress.comicgenesis.com/miracle28.htm here]] in ''{{Mindmistress}}''.
* In ''IrregularWebcomic'' in the Cliffhangers storyline, starting [[http://www.irregularwebcomic.net/598.html here]].
* Used in ''{{OMFG}}'' to parody ''Manga/BlackCat''.
* In ''Webcomic/DemonFist'', "orihalcon" is super-strong and damps out supernatural energies (so when Rory is handcuffed with it, he can't use his [[PowerFist demon arm]] or [[HeroicHost manifest Shaise, Crag or Dither]]). The pirates are amazed to discover that Rosenquist has entire prison cells made of the stuff.
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[[folder:WebOriginal]]
* Used in ''Literature/TheDescendants''. It's first seen as a rough type of armor called 'orihalcite' that even [[ExtraOreDinary Alloy]] couldn't effect with his powers. Later appears in a refined form with the proper name.
* Used with WILDLY variable spelling in the ''WhateleyUniverse''.
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