Black Obsidian tumbled stones. Fairly opaque stones.
See photos for similar items. Ruler in centimeters.
Price is for ONE randomly selected stone.
A natural volcanic glass.
Chemical Formula: SiO2
Mohs Scale Hardness: 7
Location: Worldwide
Typical Appearance: Typically black, but many variations occur due to the wide variety of minerals it can contain.
Product 3/9
This product was added to our catalog on Wednesday 01 April, 2015.