Golden Obsidian Natural 6mm Round Large Hole Beads - 8 Inch Shape_Faceted Rice They are all varieties of

They are all varieties of the mineral corundum

Once cooled

often found with white

botryoidal

and forms within a host rock such as ironstone or sandstone

Golden Obsidian Natural 6mm Round Large Hole Beads - 8 Inch Shape_Faceted Rice They are all varieties ofGolden Obsidian is a naturally occurring volcanic glass, shiny black with a golden sheen. Obsidian is produced when lava erupts from a volcano and cools rapidly with minimal crystal growth. It is sometimes used for scalpel blades in cardiac surgery, as Obsidian can be formed into a blade many times sharper than steel surgical blades. Approximate Hole Diameter: 2mm