igneous
Unakite
Altered Granite (composed of orthoclase feldspar, epidote, and quartz)
Mohs hardness of 6 to 7, distinctive pink (orthoclase) and green (epidote) coloration with occasional clear quartz, vitreous to dull luster, granular crystal structure, poor cleavage, specific gravity of 2.8 to 3.0
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Physical properties
Mohs hardness of 6 to 7, distinctive pink (orthoclase) and green (epidote) coloration with occasional clear quartz, vitreous to dull luster, granular crystal structure, poor cleavage, specific gravity of 2.8 to 3.0
Formation & geological history
Formed by the hydrothermal alteration (metasomatism) of granitic rocks, where circulating hot waters alter plagioclase feldspar into green epidote.
Uses & applications
Commonly used for ornamental carvings, decorative objects, tumbled stones, beads, and cabochons in jewelry.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it gets its name. It is often carved into miniature decorative items like mushrooms, animals, and spheres due to its appealing mottled colors.
Field identification & locations
Easily identified by its unique mottled combination of pink and green hues. Found globally including in the USA, South Africa, Brazil, and China. Popular among crystal healers and lapidary hobbyists.
