Rhodonite

Physical Properties

Hardness: 5.5-6.5 (Mohs scale), Color: Rose-pink to brownish-red with black manganese oxide inclusions, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect, Specific gravity: 3.5-3.7

Formation & Geological History

Forms in manganese-rich metamorphic rocks, hydrothermal veins, and contact metamorphic zones. Usually found in ores associated with manganese minerals.

Uses & Applications

Used primarily as an ornamental stone, in gemstone carvings, for beads and cabochons in jewelry, and occasionally as a manganese ore.

Geological Facts

The name is derived from the Greek word 'rhodon', meaning rose. It was chosen as the state gem of Massachusetts in 1979.

Field Identification & Locations

Identify in the field by its distinct rose-pink color often crossed by black dendritic veins or patches of manganese oxide. Found in Russia, Sweden, Australia, Canada, and the USA (New Jersey, Massachusetts).

Identified on: 5/5/2026

Mode: Standard