mineral

Tumbled rhodonite

Rhodonite (MnSiO₃), commonly with manganese oxides and quartz

AI-generated identification · may be incorrect

Opaque vivid pink to rose-red material with black to gray dendritic/inclusion patches and a polished vitreous-to-waxy luster. Mohs hardness is about 5.5–6.5; it has triclinic crystal structure, imperfect cleavage, and specific gravity around 3.4–3.7.

Identified September 8, 2026More mineral →

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Physical properties

Formation & geological history

Rhodonite forms mainly in metamorphosed manganese-rich sedimentary deposits and hydrothermal veins, commonly alongside pyrolusite, manganite, quartz, and calcite. Its age depends on the host deposit; this tumbled specimen cannot be dated visually.

Uses & applications

Used as an ornamental stone, carving material, cabochons, beads, and inexpensive jewelry; attractive pink-and-black pieces are popular among collectors.

Geological facts

The black markings are usually manganese-oxide minerals, a characteristic feature that helps distinguish rhodonite from similarly pink stones such as rose quartz.

Field identification & locations

Identify it by the saturated pink color, black veining or blotches, relatively high density, and lack of rose quartz’s translucency. Common sources include Russia, Australia, Peru, Brazil, Sweden, and the United States.