Obsidian
obsidian
No. Obsidian is volcanic glass. Glass is amorphous and thus noncrystalline.
Type in "buy obsidian" in your search bar. You will be given information on several sources. Knappable obsidian sells for around $5 US per pound.
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Obsidian is a type of volcanic glass formed from quickly cooled lava, so it does not have layers of banding like sedimentary rocks. Instead, obsidian typically has a smooth, uniform texture with occasional swirls or flow lines caused by the rapid cooling process.
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.
Neither, obsidian is a glass.
yes obsidian is a crystal.