igneous
Apache Tear
Obsidian (Hydrated Silica Rich Volcanic Glass)
Hardness: 5.0-5.5; Color: Black to smoky brown; Luster: Vitreous/Glassy; Structure: Amorphous (non-crystalline); Fracture: Conchoidal; Specific Gravity: 2.3-2.6
- Hardness
- 5
- Color
- Black to smoky brown
- Luster
- Vitreous/Glassy
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Physical properties
Hardness: 5.0-5.5; Color: Black to smoky brown; Luster: Vitreous/Glassy; Structure: Amorphous (non-crystalline); Fracture: Conchoidal; Specific Gravity: 2.3-2.6
Formation & geological history
Formed from the rapid cooling of silica-rich (rhyolitic) lava. These specific nodules are often found embedded in gray perlite. Most specimens found in North America date back to the Tertiary period (approx. 20-40 million years ago).
Uses & applications
Used primarily in lapidary work for cabochons and jewelry, as a healing stone in metaphysical practices, and as a popular specimen for beginner rock collectors.
Geological facts
According to legend, the stone was named in honor of the Apache tribe in Arizona. It is said that the tears of the women of the tribe, who mourned their lost warriors, turned to stone upon hitting the ground.
Field identification & locations
Identify in the field by their rounded, water-worn appearance and their translucency when held up to a bright light (unlike regular basalt). Commonly found in the American Southwest, particularly Arizona and Nevada. Look for small, glassy black pebbles in grayish, ashy-looking perlite beds.
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