metamorphic
Unakite
Altered Granite (Epidote, Pink Orthoclase Feldspar, and Quartz)
AI-generated identification · may be incorrectHardness is 6 to 7 on the Mohs scale. Displays a mottled green and pink coloration with a vitreous to dull luster.
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Physical properties
Hardness is 6 to 7 on the Mohs scale. Displays a mottled green and pink coloration with a vitreous to dull luster.
Formation & geological history
Formed by the hydrothermal alteration of granitic rocks, where plagioclase feldspar is replaced by epidote.
Uses & applications
Used primarily as a decorative stone for cabochons, beads, carved objects, and architectural tiles.
Geological facts
First discovered in the Unaka Mountains of North Carolina, from which it derives its name. It is a favored material for amateur lapidary work.
Field identification & locations
Easily identified by its distinct green and pink patchy matrix. Commonly sourced from the US, South Africa, and Brazil.
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