Obsidian is volcanic silica glass. It’s the result of volcanic lava coming in contact with water. It is considered a semiprecious stone. It is used for ornamental and healing purposes. Color of Obsidian ranges from dark green to dark brown and black. streaks may appear and are called “the eye of the rock”. Some have it; some don’t. This is normal. This specimen is round. It reflects like a mirror. Great decoration. Images are for illustration only. Move mouse over image for zoom.
Approximate dimensions: 4 in diameter x 1/2 in depth. It weights around 1/2 lbs. Black