igneous
Unakite
Altered Granite (Epidotized Granite)
AI-generated identification · may be incorrectHardness of 6 to 7 on the Mohs scale. Displays distinct pink orthoclase feldspar, green epidote, and clear quartz with a vitreous to dull luster.
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Physical properties
Hardness of 6 to 7 on the Mohs scale. Displays distinct pink orthoclase feldspar, green epidote, and clear quartz with a vitreous to dull luster.
Formation & geological history
Formed through hydrothermal alteration of granite, where hot fluids alter plagioclase feldspar into epidote over millions of years.
Uses & applications
Popularly cut and polished into cabochons, beads, spheres, and ornamental carvings for jewelry and decorative items.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it derives its name.
Field identification & locations
Easily identified by its striking mottled pink and green color combination. Found worldwide, notably in the US, South Africa, and Brazil.
