igneous
Apache Tear
Obsidian (Hydrated Silica Glass)
Hardness: 5-5.5 (Mohs), Color: Black to smoky grey, Luster: Vitreous/glassy, Crystal structure: Amorphous (non-crystalline), Cleavage: Conchoidal fracture, Specific gravity: 2.3-2.5
- Hardness
- 5-5
Identified More igneous →
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Physical properties
Hardness: 5-5.5 (Mohs), Color: Black to smoky grey, Luster: Vitreous/glassy, Crystal structure: Amorphous (non-crystalline), Cleavage: Conchoidal fracture, Specific gravity: 2.3-2.5
Formation & geological history
Formed from the rapid cooling of viscous rhyolitic lava. These specific rounded nodules are the result of weathering within perlite beds, often dating back to the Tertiary period.
Uses & applications
Used primarily in lapidary work for cabochons, jewelry, and as a popular specimen for rock collectors and metaphysical practitioners.
Geological facts
Legended to be the tears of Apache women grieving for warriors who jumped from a cliff to avoid capture; they appear opaque but are translucent when held to a strong light source.
Field identification & locations
Found in volcanic regions like Arizona and Nevada. Identify by its smooth, water-worn texture and its characteristic dark-grey translucency when backlit.
