mineral

Rhodonite

Manganese silicate (Mn,Fe,Mg,Ca)SiO3

Hardness: 5.5-6.5 on Mohs scale; Color: Rose-pink to brownish red; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 3.5-3.7

Hardness: 5
Color: Rose-pink to brownish red
Luster: Vitreous to pearly

Identified May 31, 2026More mineral →

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Physical properties

Hardness: 5.5-6.5 on Mohs scale; Color: Rose-pink to brownish red; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 3.5-3.7

Formation & geological history

Commonly forms in metamorphic rocks through hydrothermal processes or contact metamorphism of manganese ores. Often found in association with bustamite or manganese oxides.

Uses & applications

Used as a gemstone for jewelry (cabochons, beads), ornamental carvings, and occasionally as an ore of manganese.

Geological facts

The name comes from the Greek word 'rhodon', meaning rose. It is the state gemstone of Massachusetts and is often confused with rhodochrosite, which is much softer.

Field identification & locations

Identify by its characteristic pink color often accompanied by black dendritic veins of manganese oxide. Commonly found in Russia, Sweden, Australia, Canada, and the USA.