metamorphic
Unakite
Altered Granite (Granitic Metamorphic Rock)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, mottled pink, green, and white color, vitreous luster, granular crystal structure, specific gravity around 2.6-3.0.
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Physical properties
Hardness of 6-7 on the Mohs scale, mottled pink, green, and white color, vitreous luster, granular crystal structure, specific gravity around 2.6-3.0.
Formation & geological history
Formed through hydrothermal alteration and epidotization of granite, where plagioclase feldspar is replaced by epidote.
Uses & applications
Used primarily for making cabochons, beads, small decorative carvings, and polished ornamental stones.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it derives its name.
Field identification & locations
Easily identified in the field by its distinct combination of pink orthoclase feldspar, green epidote, and clear quartz. Found globally including in the US, South Africa, and China.
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