Rhodonite

Physical Properties

Hardness: 5.5-6.5; Color: Pink, rose-red, or cherry-red; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.5-3.7

Formation & Geological History

Usually forms in manganese-rich metamorphic rocks, often associated with manganese ores and hydrothermally altered environments. It is often found in contact metamorphic zones.

Uses & Applications

Used primarily as an ornamental stone, in jewelry (beads, cabochons), and as a minor ore of manganese. It is popular among collectors for its vibrant pink hue.

Geological Facts

Rhodonite often contains black veins or patches of manganese oxide, which creates a striking contrast against the pink. It is the state gemstone of Massachusetts, USA.

Field Identification & Locations

Identify in the field by its distinctive pink color coupled with black manganese oxide dendritic patterns. Common locations include Russia, Australia, Sweden, Brazil, and the USA (New Jersey and Massachusetts).

Identified on: 4/20/2026

Mode: Standard