mineral

Rhodonite

Manganese silicate (MnSiO3)

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

Hardness: 5

Identified May 5, 2026More mineral →

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Physical properties

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).