metamorphic
Unakite
Unakite Epidosite (Granite with epidote and orthoclase)
Hardness: 6-7 (Mohs); Color: Mottled green, pink, and gray; Luster: Vitreous to dull; Crystal structure: Monoclinic (Epidote) and Monoclinic/Triclinic (Feldspar); Cleavage: Perfect in two directions for feldspar; SG: 2.85-3.20
- Hardness
- 6-7 (Mohs)
- Color
- Mottled green, pink, and gray
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 (Mohs); Color: Mottled green, pink, and gray; Luster: Vitreous to dull; Crystal structure: Monoclinic (Epidote) and Monoclinic/Triclinic (Feldspar); Cleavage: Perfect in two directions for feldspar; SG: 2.85-3.20
Formation & geological history
Formed through the hydrothermal alteration of granite where plagioclase feldspar is replaced by epidote. Often found in riverbeds and glacial drift following the erosion of igneous and metamorphic terrain.
Uses & applications
Used primarily as a gemstone for lapidary work (beads, cabochons, carvings), architectural stone, and decorative aggregate. It is popular in crystal healing communities as a stone of vision.
Geological facts
Unakite was first discovered in the Unaka Range of the Blue Ridge Mountains in the United States, which is how it earned its name. It is the state rock of Virginia.
Field identification & locations
Identify by its unique pink (orthoclase feldspar) and mossy green (epidote) mottled appearance. Common in Virginia and North Carolina, USA, but also found in South Africa and Brazil. Collectors look for a balanced ratio of green to pink.
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