igneous
Snowflake Obsidian
Volcanic Glass with Cristobalite
AI-generated identification · may be incorrectHardness of 5 to 5.5 on the Mohs scale, black color with white snowflake-like inclusions, vitreous luster, amorphous crystal structure, and conchoidal fracture.
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Physical properties
Hardness of 5 to 5.5 on the Mohs scale, black color with white snowflake-like inclusions, vitreous luster, amorphous crystal structure, and conchoidal fracture.
Formation & geological history
Formed from rapidly cooling felsic lava where the mineral cristobalite crystallized into radial cluster patterns called spherulites.
Uses & applications
Used frequently in jewelry making, ornamental carvings, and holistic healing practices.
Geological facts
The white snowflake patterns are actually small clusters of the mineral cristobalite embedded in the black volcanic glass matrix.
Field identification & locations
Easily identified by its stark black-and-white contrast resembling snowflakes; commonly sourced from the USA, Mexico, and Iceland.
