Golden Obsidian 10mm Round - 15-16 Inch DSforGB12272022 but is prized

but is prized

so named because the ancient Incas believed the stone to be the petrified blood of their ancestral rulers

This species is formally identified as Gliricidia sepium and can be found by different colloquial names in various parts of the world

giving some rubies a slightly brownish or purplish tint

Golden Obsidian 10mm Round - 15-16 Inch DSforGB12272022 but is prizedGolden 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.