mineral

Rhodonite

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

Hardness: 5.5-6.5 on Mohs scale; Color: Pink to rosy red with black dendritic inclusions of manganese oxide; 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 May 31, 2026More mineral →

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Physical properties

Formation & geological history

Commonly forms in metamorphic rocks associated with manganese ore, often through hydrothermal alteration or contact metamorphism of manganese-rich sediments.

Uses & applications

Primarily used as a gemstone for jewelry, cabochons, and beads, though it is also prized by collectors of ornamental stones and used for small carvings and decorative objects.

Geological facts

The name comes from the Greek word 'rhodon', meaning rose. It was once used in Russia to make beautiful vases and tabletops for the imperial family. It is also the state gemstone of Massachusetts.

Field identification & locations

Identify in the field by its distinct rose-pink color coupled with black manganese oxide veins or spots. It is commonly found in places like Russia (Ural Mountains), Australia, Sweden, Brazil, and the USA (New Jersey and Massachusetts).