metamorphic
Unakite
Unakite (Altered Granite)
Hardness: 6-7 Mohs; Color: Mottled green, pink, and gray; Luster: Vitreous to dull; Crystal structure: Monoclinic/Triclinic mixture; Cleavage: Prismatic (in feldspar); SG: 2.85-3.00
- 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/Triclinic mixture; Cleavage: Prismatic (in feldspar); SG: 2.85-3.00
Formation & geological history
Formed through hydrothermal metamorphism of granite where plagioclase feldspar is replaced by epidote. It is found in mountain ranges such as the Blue Ridge Mountains.
Uses & applications
Used extensively in jewelry as beads and cabochons, for architectural trim, and as a decorative stone for carving ornaments or figurines.
Geological facts
Named after the Unaka Range in North Carolina, USA, where it was first discovered. It is often used as a healing stone in metaphysical practices representing balance.
Field identification & locations
Identified by its unique 'Christmas-like' mottled green and pink appearance. Look for it in riverbeds or gravel pits in the Appalachian region.
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