mineral

Rhodonite

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

Hardness: 5.5-6.5 on Mohs scale; Color: Pink, rose-red, or brownish red, often with black 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 26, 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, and marble. Frequently associated with manganese oxides and other silicate minerals. Formed in varied geological ages following manganese deposition.

Uses & applications

Used primarily as a gemstone for jewelry (cabochons and beads), ornamental carvings, and decorative stones. Historically used as a minor ore of manganese.

Geological facts

The name comes from the Greek word 'rhodon', meaning 'rose'. It is the official state gemstone of Massachusetts and is often confused with Rhodochrosite, though Rhodonite is harder and usually contains black manganese oxide veins rather than white bands.

Field identification & locations

Identify in the field by its distinct rose-pink color paired with black dendritic (tree-like) patterns or veins. Common locations include Russia (Ural Mountains), Australia, Brazil, Sweden, and the USA (New Jersey, Massachusetts). Collector tips: Look for high color saturation and minimal white calcification.

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