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Product Catalog > Igneous Rocks  > Obsidian Igneous Rock

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Obsidian Igneous Rock   Price: Price Varies Qty: 1 Sample [$4.00] 6 Samples [$20.00] 12 Samples [$36.00] View Shopping Cart

Obsidian Igneous Rock. Black, extrusive igneous rock. Obsidian is often called volcanic glass due to its absent crystals and glassy appearance. Major minerals include feldspar, quartz and mica. An information card with details on the rocks formation, mineral content, characteristics and uses is included.

WARNING: CHOKING HAZARD - Small Parts. Not for Children Under 3 years.

May have sharp edges.