igneous
Apache Tears (Obsidian)
Hydrated Volcanic Glass (Amorphous SiO2 + H2O)
Hardness: 5-5.5 (Mohs), Color: Translucent dark brown to black when held to light, Luster: Vitreous (glassy), Structure: Amorphous (non-crystalline), Specific Gravity: 2.35-2.6
- Hardness
- 5-5
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Physical properties
Hardness: 5-5.5 (Mohs), Color: Translucent dark brown to black when held to light, Luster: Vitreous (glassy), Structure: Amorphous (non-crystalline), Specific Gravity: 2.35-2.6
Formation & geological history
Formed from rapid cooling of high-silica rhyolitic lava. These rounded nodules are often found embedded in gray perlite; they represent the core of a larger mass of volcanic glass that did not hydrate into perlite.
Uses & applications
Used primarily for lapidary work, jewelry (pendants and beads), and as a popular metaphysical or decorative gemstone for collectors.
Geological facts
Legend states that the stones formed from the tears of Apache women mourning warriors who leaped to their deaths; it is a variety of obsidian that is uniquely translucent compared to the completely opaque black obsidian.
Field identification & locations
Identify in the field by their rounded, pebble-like appearance often coated in white chalky perlite; holding them to a strong light source will reveal a smoky brown translucency. Common in the American Southwest (Arizona, New Mexico) and Mexico.
