mineral

Polished rhodonite

Rhodonite, manganese inosilicate (MnSiO₃)

AI-generated identification · may be incorrect

Typically rose-pink to red with black manganese-oxide veining or inclusions, opaque to translucent, vitreous-to-waxy luster, and triclinic crystal structure; Mohs hardness 5.5–6.5. The pictured rounded, polished piece strongly matches this appearance, though visual identification is not definitive.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in manganese-rich metamorphic deposits, commonly through hydrothermal or contact-metamorphic processes; specimens range from Precambrian to younger geological ages. Major sources include Russia, Australia, Brazil, Peru, Sweden, and the United States.

Uses & applications

Used as a lapidary stone for cabochons, beads, carvings, and tumbled specimens; occasionally used ornamentally. It is generally a collector gemstone rather than a major industrial material.

Geological facts

Black markings are usually pyrolusite or other manganese oxides, producing rhodonite’s characteristic web-like patterns. It can be confused with pink calcite, rhodochrosite, or dyed quartz.

Field identification & locations

Identify by its opaque salmon-pink color, black veins, moderate hardness, and lack of strong effervescence in dilute acid; streak and laboratory testing provide confirmation. Avoid prolonged exposure to harsh chemicals and ultrasonic cleaning.