mineral

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate)

Hardness: 5.5-6.5; Color: Rose-pink to brownish-red with black manganese oxide inclusions; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 3.5-3.7

Hardness: 5
Luster: Vitreous to pearly

Identified April 5, 2026More mineral →

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Physical properties

Hardness: 5.5-6.5; Color: Rose-pink to brownish-red with black manganese oxide inclusions; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 3.5-3.7

Formation & geological history

Formed in manganese-rich hydrothermal veins, contact metamorphic rocks, and metasomatic environments. It often occurs as a product of metamorphism of manganese ores.

Uses & applications

Used primarily as an ornamental stone, in jewelry (cabochons and beads), and as a minor ore of manganese. Also highly collected as mineral specimens.

Geological facts

The name comes from the Greek word 'rhodon' meaning 'rose'. It was once used in Russia as a protective stone for babies and travelers, and was designated the state gem of Massachusetts in 1979.

Field identification & locations

Identify in the field by its distinct pink color contrasted with black dendritic or veined manganese oxide patterns. Found commonly in Australia, Brazil, Russia (Urals), and the USA (New Jersey).

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