Rhodonite

Physical Properties

Hardness: 5.5-6.5 on Mohs scale; Color: Pink, rose-red, or reddish-brown with black manganese oxide veins; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions

Formation & Geological History

Formed in manganese-rich metamorphic rocks or hydrothermal deposits. Primary formation occurs when manganese sediments are subjected to contact or regional metamorphism.

Uses & Applications

Primarily used as an ornamental stone, for lapidary work (beads, cabochons, carvings), and occasionally as a minor ore of manganese.

Geological Facts

The name comes from the Greek word 'rhodon', meaning rose. It was once believed to help travelers have safe journeys. It is also the state gemstone of Massachusetts, USA.

Field Identification & Locations

Identify by its characteristic pink color paired with distinct black dendritic or vein-like inclusions of manganese oxide. Found in Russia, Brazil, Peru, and various parts of the USA.

Identified on: 5/5/2026

Mode: Standard