mineral

Rhodonite

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

Hardness: 5.5-6.5 on Mohs scale; Color: Pink to rose-red with black manganese oxide dendritic inclusions; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.5–3.7

Hardness: 5
Luster: Vitreous to pearly

Identified March 28, 2026More mineral →

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Physical properties

Formation & geological history

Formed through metamorphic or hydrothermal processes in manganese-rich environments. Common in contact metamorphic rocks and manganese ore deposits. Geological age varies by deposit, ranging from Precambrian to more recent eras.

Uses & applications

Primarily used as an ornamental stone, for carvings, cabochons, and jewelry (pendants/beads). It is also occasionally used as a minor manganese ore. Popular among mineral collectors for its unique 'pink and black' color blocking.

Geological facts

The name is derived from the Greek word 'rhodon', meaning rose. It is the official state gem of Massachusetts and is often mistaken for Rhodochrosite, though Rhodonite is harder and contains the distinctive black manganese veins.

Field identification & locations

Identify in the field by its distinct rose-pink color crisscrossed with black veins of manganese oxide. Commonly found in Russia (Ural Mountains), Australia, Brazil, Canada, and the USA (New Jersey and Massachusetts). Collectors should look for deep pink saturation.