Mexico's obsidian has been used for everything from swords to jaguar statues, but its deposits in Jalisco are being depleted.

This lustrous rock can be found in nature, but it's easily accessible in stores. Intense, mysterious, and psychically potent, the Obsidian crystal captivates as much as it can perplex the curious ...

L-983 (Glass Mountain Obisdian): Unknown collection procedure. Collection includes raw material, outer surface, modern flint-knappers' work, and naturally-weathered specimens. L-983 (Glass Mountain ...

L-55 (Glass Mountain Obsidian): Not a direct collection from outcrop; Unknown collection procedure. Collection includes raw material, outer surface,and naturally-weathered specimens. L-55 (Glass ...