metamorphic

Unakite

Unakite (Altered Granite)

AI-generated identification · may be incorrect

Hardness: 6-7 Mohs; Color: Mottled green (epidote), pink (orthoclase), and gray (quartz); Luster: Vitreous to dull; Structure: Coarse-grained massive; Cleavage: None (fractures)

Hardness: 6-7 Mohs
Luster: Vitreous to dull

Identified July 2, 2026More metamorphic →

Explore Unakite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6-7 Mohs; Color: Mottled green (epidote), pink (orthoclase), and gray (quartz); Luster: Vitreous to dull; Structure: Coarse-grained massive; Cleavage: None (fractures)

Formation & geological history

Formed through the hydrothermal metamorphism of granite, where plagioclase feldspar is replaced by epidote. Primarily found in the Blue Ridge Mountains of the USA.

Uses & applications

Used for lapidary work, cabochons, beads, decorative carvings, architectural facing, and as a popular semi-precious gemstone.

Geological facts

Named after the Unaka Range in North Carolina, USA, where it was first discovered. It is often used in jewelry because it takes a high polish.

Field identification & locations

Identifiable by its unique pistachio-green and salmon-pink mottled appearance. Commonly found as river pebbles in areas with granitic metamorphic bedrock.