igneous
Unakite
Altered Granite (composed of pink orthoclase feldspar, green epidote, and quartz)
Hardness of 6 to 7 on the Mohs scale, characterized by mottled colors of pink, green, and clear/white. It has a vitreous to dull luster and a massive crystal structure with no distinct cleavage.
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Physical properties
Hardness of 6 to 7 on the Mohs scale, characterized by mottled colors of pink, green, and clear/white. It has a vitreous to dull luster and a massive crystal structure with no distinct cleavage.
Formation & geological history
Formed through hydrothermal alteration of granite, where hot fluids alter the original minerals, replacing plagioclase feldspar with epidote. Typically formed in ancient geological settings.
Uses & applications
Used primarily in lapidary arts, tumbled stones, cabochons for jewelry, and ornamental carvings.
Geological facts
Unakite was first discovered in the Unaka Mountains of North Carolina, from which it derives its name.
Field identification & locations
Easily identified by its distinct and vibrant pink and green mottled appearance. Found worldwide including the US, South Africa, Brazil, and China.
