Golden Obsidian 10x14mm Barrel - Large Hole Beads 5-6mm orange and rust are due

orange and rust are due to traces of hematite within the stone

Orthoceras was an ancient mollusk that lived over 370 million years ago

those substances add a delicate accent to the otherwise clear gemstone

with a Mohs Hardness of 8

and this phenomenon is thought to be due to impurities of yttrium or organic matter within the crystal lattice

Golden Obsidian 10x14mm Barrel - Large Hole Beads 5-6mm orange and rust are dueGolden 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.