mineral

Rhodonite

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

Hardness: 5.5-6.5 on Mohs scale; Color: Pink to rose-red with black manganese oxide veins; Luster: Vitreous to pearly; Crystal Structure: Triclinic; Cleavage: Perfect in two directions; Specific Gravity: 3.5-3.7

Hardness: 5
Color: Pink to rose-red with black manganese oxide veins
Luster: Vitreous to pearly

Identified March 11, 2026More mineral →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Formed through hydrothermal metamorphism or in manganese-bearing sedimentary rocks that have undergone contact metamorphism. Often found in metamorphic rocks associated with manganese ores across various geological ages.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons and beads), ornamental carvings, and slabs. Historically used as a minor ore of manganese.

Geological facts

Known as the 'Eagle Stone' in Russia, it was traditionally placed in babies' cradles to protect them. It is the state gemstone of Massachusetts, USA. The black dendritic patterns are actually manganese oxide inclusions.

Field identification & locations

Identify by its characteristic 'peachy-pink' to 'raspberry' color mixed with black web-like veins. Often found in metamorphic terrains like the Ural Mountains (Russia), Sweden, Australia, British Columbia, and Brazil. Collectors look for bright pink saturation and intricate patterns.