This is a gorgeous, little rainbow obsidian slab! Found locally near the Chico area, this rainbow obsidian is from Davis Creek, California. Obsidian is an igneous rock that forms when molten rock cools so rapidly that atoms are unable to rearrange themselves into a crystalline structure. The result is volcanic glass with a smooth uniform texture. It is a rock rather than a mineral, it is a mixture of cryptocrystalline grains of silica minerals in a glass-like suspension. Essentially it is a supercooled liquid.
How amazing it is to hold a slice of time right in the palm of your hand. I love the overall texture of this specimen. It's jagged around the edges but overall it is very flat and smooth.
Size: 3" x 2" x 0.25"
Weight: 1.2 oz