mineral

Rhodonite

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

Hardness: 5.5-6.5 on Mohs scale; Color: Pink, rose-red, or brownish-red often with black manganese oxide inclusions; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 3.5-3.7

Hardness: 5
Luster: Vitreous to pearly

Identified July 10, 2026More mineral →

Explore Rhodonite in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

Formed in metamorphic rocks (especially those containing manganese), hydrothermal veins, and contact metamorphic zones. Most abundant in regional metamorphic deposits.

Uses & applications

Used primarily as an ornamental stone, gemstone for jewelry (cabochons and beads), and as a minor ore of manganese. Valued by collectors for its distinct pink-and-black patterns.

Geological facts

Named from the Greek word 'rhodos' meaning 'rosy'. It is the state gemstone of Massachusetts, USA. The black veins are often dendritic patterns of manganese oxide like pyrolusite.

Field identification & locations

Identify by its characteristic rose-pink color coupled with black manganese veins or blotches. Found in Argentina, Australia, Brazil, Russia, and the USA. Collectors should look for vibrant pink saturation and interesting 'landscape' patterns in the black inclusions.