metamorphic
Unakite Epidote Conglomerate
Epidotized granitic conglomerate
Hardness: 6-7 (Mohs scale); Color: Mottled green (epidote), pink (orthoclase), and gray (quartz); Luster: Vitreous to dull; Structure: Granular/Massive; SG: 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), pink (orthoclase), and gray (quartz); Luster: Vitreous to dull; Structure: Granular/Massive; SG: 2.85-3.20
Formation & geological history
Formed through the hydrothermal metamorphism of granitic rocks, where plagioclase feldspar is replaced by epidote. Often found as rounded pebbles in riverbeds or coastal areas.
Uses & applications
Used primarily as a decorative stone, in lapidary work for cabochons and beads, and as an architectural facing stone.
Geological facts
Unakite takes its name from the Unaka Range in North Carolina, USA, where it was first discovered. It is often used in crystal healing to represent balance and grounding.
Field identification & locations
Identified by its distinctive pistachio-green and pink mottled appearance. Common in the Blue Ridge Mountains of the US and along the shores of Lake Superior as glacial drift.
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