igneous

Apache Tear (Obsidian)

Obsidian / Amorphous Volcanic Glass (primarily SiO2)

Hardness: 5–5.5 Mohs; Color: Black to dark smoky-translucent; Luster: Vitreous/Glassy; Structure: Amorphous (non-crystalline); Fracture: Conchoidal; Specific Gravity: 2.3–2.6

Hardness: 5–5
Color: Black to dark smoky-translucent
Luster: Vitreous/Glassy

Identified March 28, 2026More igneous →

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Physical properties

Hardness: 5–5.5 Mohs; Color: Black to dark smoky-translucent; Luster: Vitreous/Glassy; Structure: Amorphous (non-crystalline); Fracture: Conchoidal; Specific Gravity: 2.3–2.6

Formation & geological history

Formed through the rapid cooling of rhyolitic lava which prevents crystal growth. These specific nodules often occur within perlite deposits. Many specimens date back to the Pliocene or Pleistocene epochs.

Uses & applications

Commonly used in jewelry for pendants and rings, lapidary tumbling, and as a popular metaphysical or spiritual collecting stone.

Geological facts

According to Native American legend, the stone was formed from the tears of Apache women mourning warriors who jumped from a cliff to avoid capture. Geologically, they are rounded cores of obsidian naturally weathered and etched within perlite.

Field identification & locations

Identify by holding it up to a strong light source; despite appearing black, it should be smoky or tan and translucent at the edges. Commonly found in Arizona and Nevada, USA. In the field, look for dark, rounded nodules nestled in gray, chalky perlite.

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