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Photo of a fragment of obsidian

Photo by John Atherton

Attribution-Sharealike

Ois forObsidian

Obsidian is a dark glass formed in the larval flows of volcanos. Obsidian doesn't have a crystalline structure and can be broken into very thin pieces that can be used to make a very sharp cutting edge, spear tip or arrow head.

Obsidian rhymes with ...

Iranian, Historian, Australian, Bosnian, Abyssinian, Librarian ... see all