Mineral

Rhodonite (in matrix)

Rhodonite (Mn,Fe,Mg,Ca)SiO3

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

Hardness: 5
Color: Pink to rosy red with black manganese oxide inclusions
Luster: Vitreous to pearly

Identified March 30, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal processes or contact metamorphism in manganese-rich sedimentary rocks. It is often found in metamorphic rocks associated with other manganese minerals.

Uses & applications

A popular lapidary material used for beads, cabochons, and ornamental carvings. It is also a minor ore of manganese and a sought-after specimen for mineral collectors.

Geological facts

The name originates from the Greek word 'rhodos', meaning rosy. It was once used in Russia as a protective stone for travelers and newborns. It is the official state gemstone of Massachusetts, USA.

Field identification & locations

Identify in the field by its distinct 'bubblegum' pink color contrasted with black dendritic (tree-like) or veined manganese oxide patterns. Common locations include Russia (Urals), Australia (Broken Hill), Brazil, and the USA (New Jersey and Massachusetts).