mineral

Rhodonite

(Mn,Fe,Mg,Ca)SiO3

Hardness of 5.5 to 6.5 on the Mohs scale, pink to rose-red color with characteristic black or dark brown dendritic veins of manganese oxide, vitreous to pearly luster, triclinic crystal system, good cleavage.

Identified August 1, 2026More mineral →

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Physical properties

Formation & geological history

Formed in metamorphic environments, typically in manganese-rich hydrothermal and contact metamorphic deposits, often associated with skarns and metamorphosed manganese ores.

Uses & applications

Used primarily as an ornamental stone, for tumbled stones, cabochons in jewelry, carvings, and occasionally as a minor ore of manganese.

Geological facts

Rhodonite gets its name from the Greek word 'rhodon', meaning rose, referring to its distinct pink color. It is often designated as the official state gemstone of Massachusetts.

Field identification & locations

Easily identified by its distinct vibrant pink or rose coloration interwoven with web-like black dendrites. Commonly found in Russia, Australia, Sweden, Madagascar, and the United States (such as Massachusetts and California).