The name Obsidian comes from the name Obsius, a Roman credited with discovering a similar stone in Ethiopia.
Obsidian is prized flintknapping material as it makes a wonderful, sharp blade that was once the preferred tool for circumcisions in the Middle East and is used for surgical scalpels even today. The Macuahuitle, or Aztec War Club was a fearsome weapon used by the Aztecs consisting of several obsidian blades on a wooden handle. This weapon was capable of inflicting nightmarish injuries.