mineral

Rhodonite

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

Hardness: 5.5-6.5 on Mohs scale; Color: Rose-pink to brownish red with black manganese oxide veins; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect at 90-degree angles; Specific Gravity: 3.5-3.7

Hardness: 5
Color: Rose-pink to brownish red with black manganese oxide veins
Luster: Vitreous to pearly

Identified June 29, 2026More mineral →

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Physical properties

Formation & geological history

Formed in metamorphic rocks, manganese ores, and hydrothermal veins. It often occurs as a result of contact metamorphism or in skarn deposits where manganese-rich fluids interact with carbonate rocks.

Uses & applications

Commonly used as a gemstone for jewelry (cabochons and beads), ornamental carvings, stone inlays, and occasionally as a minor ore of manganese.

Geological facts

The name comes from the Greek word 'rhodon', meaning rose. It was once believed to help traveler safety and is the state gemstone of Massachusetts. Its black veins are often manganese oxide, such as pyrolusite.

Field identification & locations

Identify by its distinctive bright pink color contrasted with black dendritic (branching) veins. It is found in Russia (Ural Mountains), Sweden, Australia, Brazil, and the USA (New Jersey and Massachusetts). Collectors should look for balanced pink-to-black ratios.