Gold Sheen Obsidian pendant wrapped in copper

Gold Sheen Obsidian Wrapped in aged copper and comes on a black cord. 

"Obsidian is a naturally occurring volcanic glass. Obsidian is produced when lava extruded from a volcano cools rapidly with minimal crystal growth.

Golden Sheen Obsidian is a variety of Obsidian which exhibits a golden sheen, caused by gas bubbles remaining from the lava flow, aligned along layers created when the molten rock was flowing before it cooled.