Obsidian for sale

Buy or sell polished obsidian stones. Obsidian is an opaque stone with a glassy lustre. It is formed when the lava from volcanic eruptions cools within the earth. The speed at which it cools prevents crystallization and the rock forms as solid volcanic glass. Obsidian usually comes in black colour, but it can also be found in light brown, brown mottled with black, and black with a golden or silvery sheen. Snowflake obsidian is dotted with white patches. The rainbow obsidian has purple, green and gold bands of sheen.