Obsidian Facts
Photo courtesy of Scott Papper, GIA GG, AJP, CM (NAJA), Global Gemology & Appraisals
Obsidian is a natural glass formed by the rapid cooling of volcanic lava.
Obsidian is hard yet brittle, chipping easily, leaving sharp edges. In ancient times, obsidian was sharpened into blades and arrowheads.
Sheen obsidian has either a golden or silver aventurescent sheen.
Obsidian Gallery
