mineral

Rhodonite

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

AI-generated identification · may be incorrect

Hardness: 5.5-6.5 on Mohs scale; Color: Pink to rose-red with black manganese oxide inclusions (dendritic veins); Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.4-3.7.

Hardness: 5
Luster: Vitreous to pearly

Identified March 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms in manganese-rich metamorphic rocks and hydrothermal veins. It is often found associated with manganese ores and can vary in age depending on the host rock formation, often dating back to the Proterozoic or Paleozoic eras.

Uses & applications

Primarily used as an ornamental stone, for lapidary work (cabochons, beads), small sculptures, and as a minor ore of manganese.

Geological facts

Rhodonite is the state gemstone of Massachusetts, USA. Its name is derived from the Greek word 'rhodon', meaning 'rose'. The black 'veining' is caused by the oxidation of manganese.

Field identification & locations

Identify in the field by its distinct rose-pink color coupled with black dendritic (tree-like) patterns of manganese oxide. Found in Russia (Urals), Australia, Brazil, Canada, and the USA. Collectors look for deep pink saturation with aesthetic black patterning.