metamorphic
Unakite
Epidotized Granite
Hardness: 6-7 (Mohs scale); Color: Mottled green (Epidote) and pink (Orthoclase feldspar) with clear/grey (Quartz); Luster: Vitreous to dull; Crystal structure: Monoclinic/Triclinic mixture; Cleavage: None/Indistinct; Specific gravity: 2.85-3.20
- Hardness
- 6-7 (Mohs scale)
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 (Mohs scale); Color: Mottled green (Epidote) and pink (Orthoclase feldspar) with clear/grey (Quartz); Luster: Vitreous to dull; Crystal structure: Monoclinic/Triclinic mixture; Cleavage: None/Indistinct; Specific gravity: 2.85-3.20
Formation & geological history
Formed through the hydro-thermal metamorphism of granite, where plagioclase feldspar is replaced by epidote. Usually associated with Precambrian or Paleozoic geological environments.
Uses & applications
Predominantly used as a lapidary stone for beads, cabochons, and small carvings. Also used in architectural ornamentation and as a popular stone for chakra balancing in metaphysical practices.
Geological facts
Unakite was first discovered in the Unaka Range of North Carolina, USA, from which it takes its name. It is the state rock of Virginia.
Field identification & locations
Identify in the field by its unique 'pistachio green' and 'salmon pink' mottled appearance. It is commonly found in riverbeds and beaches along the Blue Ridge Mountains and Lake Superior. Collectors should look for balanced color saturation.
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