Obsidian is a naturally occurring glass formed as an extrusive igneous rock
Obsidian is a naturally occurring volcanic form of glass.
Obsidian
Mahogany Obsidian
No. Obsidian is brittle.
No. Obsidian is natural glass, mostly silica. Obsidian is of volcanic origin.
Obsidian is, itself, a mineral.
Obsidian is a natural glass.
yes obsidian is a crystal.
Neither, obsidian is a glass.
Obsidian is an igneous rock.
Other names for obsidian is Apache tears, volcanic glass, and Black obsidian.
Snowflake Obsidian