mineral

Rhodonite

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

Hardness: 5.5-6.5 Mohs scale; Color: Pink to rose-red with black dendritic veins (manganese oxides); Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific gravity: 3.57-3.76.

Hardness: 5
Luster: Vitreous to pearly

Identified June 21, 2026More mineral →

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Physical properties

Formation & geological history

Formed in manganese-rich metamorphic rocks or hydrothermal deposits. Often found as a secondary mineral in ore veins. Its formation is typically associated with contact metamorphism or metasomatism.

Uses & applications

Used primarily as a gemstone for cabochons, beads, and carvings. Also used as an ornamental stone in interior design and occasionally as a source of manganese ore.

Geological facts

The name comes from the Greek word 'rhodon', meaning rose. It was once believed by travelers in Russia to offer protection because it was often found in the nests of eagles. It is the official state gemstone of Massachusetts, USA.

Field identification & locations

Identify in the field by its distinct pink color contrasted against black manganese oxide 'webbing' or dendrites. It is commonly found in Russia (Ural Mountains), Australia, Brazil, Canada, and the USA. Collectors look for high-quality specimens with deep pink color and a glassy luster.