mineral

Rhodonite

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

Hardness: 5.5-6.5 Mohs scale. Color: Rose-pink to brownish red, often with black manganese oxide veins. Luster: Vitreous to pearly. Crystal structure: Triclinic. Cleavage: Perfect at two angles. Specific gravity: 3.5-3.7.

Hardness: 5
Luster: Vitreous to pearly

Identified March 15, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal or metamorphic processes, often found in manganese-rich metamorphic rocks, ore deposits, or contact zones. Specimens can date from various geological ages, often associated with Precambrian formations.

Uses & applications

Used primarily as an ornamental stone, for lapidary work (beads, cabochons, carvings), and occasionally as a minor ore of manganese. High-grade translucent pieces are prized by gem collectors.

Geological facts

Known as the 'Stone of Compassion.' It was once used in 16th-century Russia to make ornamental objects for the Tsars. The name comes from the Greek word 'rhodon,' meaning rose. It is the state gem of Massachusetts.

Field identification & locations

Identify in the field by its distinct 'pink and black' color pairing; the black veins (dendritic manganese oxide) are highly characteristic. Commonly found in Russia (Ural Mountains), Sweden, Australia, Brazil, and the USA (New Jersey).