Unakite

Physical Properties

Hardness: 6-7 (Mohs); Color: Pink (Orthoclase), Green (Epidote), Gray/Clear (Quartz); Luster: Vitreous to dull; Crystal structure: Monoclinic/Hexagonal; Cleavage: None/Poor.

Formation & Geological History

Formed through hydrothermal alteration of granite, where plagioclase feldspar is replaced by epidote. Generally associated with the Precambrian era in the Blue Ridge Mountains.

Uses & Applications

Commonly used for lapidary work like beads, cabochons, and decorative carvings; also used as an architectural stone in flooring or veneers.

Geological Facts

Named after the Unaka Range in the Appalachian Mountains where it was first discovered. It is the state rock of Virginia.

Field Identification & Locations

Identify in the field by its distinct mottled pattern of pistachio-green and salmon-pink. Typically found in riverbeds and mountainous outcrops in the Southeastern United States and South Africa.

Identified on: 5/19/2026

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