metamorphic
Unakite Jasper
Unakite (Epidotized Granite)
Hardness: 6-7 (Mohs); Color: Mottled green, pink, and white; Luster: Vitreous to dull; Crystal structure: Monoclinic and Trigonal (mixture); Cleavage: None; Specific gravity: 2.85-3.00
- Hardness
- 6-7 (Mohs)
- Color
- Mottled green, pink, and white
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 (Mohs); Color: Mottled green, pink, and white; Luster: Vitreous to dull; Crystal structure: Monoclinic and Trigonal (mixture); Cleavage: None; Specific gravity: 2.85-3.00
Formation & geological history
Formed through hydrothermal metamorphism of granite, where plagioclase feldspar is replaced by epidote, while orthoclase and quartz remain. Typically Proterozoic to Paleozoic age.
Uses & applications
Primarily used in jewelry (cabochons, beads), decorative carvings, architecture, and as an ornamental stone in landscaping.
Geological facts
It was first discovered in the Unaka Range of North Carolina, from which it gets its name. It is commonly used as a stone for emotional healing in metaphysical circles.
Field identification & locations
Identify by its distinctive pistachio-green (epidote) and salmon-pink (orthoclase feldspar) patches. Commonly found as river pebbles in the Blue Ridge Mountains of the USA or in glacial till around the Great Lakes.
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