igneous
Apache Tear
Obsidian nodule
AI-generated identification · may be incorrectHardness of 5 to 5.5 on the Mohs scale, dark brown to black color, vitreous luster, amorphous crystal structure with conchoidal fracture.
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Physical properties
Hardness of 5 to 5.5 on the Mohs scale, dark brown to black color, vitreous luster, amorphous crystal structure with conchoidal fracture.
Formation & geological history
Formed as small, rounded nodules of volcanic glass within rhyolitic lava flows or perlite deposits.
Uses & applications
Used primarily in lapidary arts, jewelry making, and as a popular specimen for crystal and rock collectors.
Geological facts
Legend connects these stones to the grief of Apache families mourning warriors lost in a 1870 battle.
Field identification & locations
Identify by its translucent dark brown appearance when backlit and smooth, rounded pebble shape found within perlite.
