Obsidian Sphere | Classic Natural Black Crystal | Huge 116mm, 4.57 in | 2.186 kg

Obsidian is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. Pure obsidian is usually dark in appearance, though the color varies depending on the impurities present. Iron and other transition elements may give the obsidian a dark brown to black color.

Most black obsidians contain nano inclusions of magnetite, an iron oxide. Very few samples of obsidian are nearly colorless. In some stones, the inclusion of small, white, radially clustered crystals (spherulites) of the mineral cristobalite in the black glass produce a blotchy or snowflake pattern (snowflake obsidian). 

Name: Obsidian Sphere
Dimensions: 116 mm - 4.57 in
Weight: 2.186 kg - 4 lbs 13 oz
Origin:  China