metamorphic
Unakite
Altered Granite (Epidote, Pink Orthoclase Feldspar, and Quartz)
AI-generated identification · may be incorrectHardness of 6 to 7 on the Mohs scale, displaying distinct mottled patches of pink, green, and clear. It has a vitreous to dull luster and a compact, granular crystal structure with no significant cleavage.
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Physical properties
Hardness of 6 to 7 on the Mohs scale, displaying distinct mottled patches of pink, green, and clear. It has a vitreous to dull luster and a compact, granular crystal structure with no significant cleavage.
Formation & geological history
Formed through hydrothermal alteration of granitic rocks, where heated fluids metamorphose plagioclase feldspar into green epidote.
Uses & applications
Commonly tumbled, carved into decorative objects, or cut into cabochons for jewelry and lapidary work.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it derives its name. It is a favored ornamental stone among rockhounds.
Field identification & locations
Easily identified by its characteristic mosaic of pink feldspar and green epidote. Found globally including the US, South Africa, and Brazil.
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