Rhodonite

Physical Properties

Hardness: 5.5-6.5 on Mohs scale; Color: Rose-pink to brownish red; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.57-3.76.

Formation & Geological History

Formed through regional or contact metamorphism of manganese-rich rocks or in hydrothermal veins and replacement deposits. It is often associated with manganese ores.

Uses & Applications

Primarily used as a gemstone for jewelry (beads, cabochons), ornamental carvings, and occasionally as a source of manganese ore. It is popular among mineral collectors.

Geological Facts

Rhodonite was named after the Greek word 'rhodon' meaning rose. It is the state gemstone of Massachusetts, USA. The most valuable variety is a rare transparent crystalline form found in New South Wales, Australia.

Field Identification & Locations

Identify by its distinctive shell-pink to rose-red color and often by the presence of black manganese oxide veins or patches. Found commonly in Brazil, Russia (Urals), USA (New Jersey), and Australia. Collectors should look for vibrant pink saturation.

Identified on: 4/20/2026

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