Rhodonite
Rhodonite is a pink manganese silicate often featuring black veins of manganese oxide. It's the official gem of Massachusetts.
Rhodonite properties at a glance
| Type | Minerals |
|---|---|
| Chemical formula | MnSiO3 |
| Mohs hardness | 6 |
| Crystal system | triclinic |
| Luster | vitreous |
| Streak | White |
| Cleavage | Perfect |
| Fracture | Conchoidal |
| Specific gravity | 3.6 |
| Transparency | translucent |
| Common colors | Pink, Rose, Pink with black veins |
| Rarity | uncommon |
Geology & background
Forms through metamorphism of manganese-rich sediments or in hydrothermal veins.
Discovered in the Ural Mountains, it became a favorite of Russian aristocracy in the 18th century.
How to identify Rhodonite
- Check whether the specimen's color and texture match typical Rhodonite examples.
- Photograph a fresh surface in natural light and avoid shadows, glare, or wet surfaces.
- Use hardness, streak, luster, grain size, and locality together; no single trait is enough for every specimen.
Where Rhodonite is found
Rhodonite is reported from multiple localities or geological settings. Exact locality should be verified from specimen provenance, maps, or field notes.
How much is Rhodonite worth?
| Entry-level specimen | $5 |
|---|---|
| Typical collector specimen | $30 |
| Premium specimen | $200+ |
Value depends on size, condition, color, crystal quality, locality, rarity, preparation, and provenance. Treat this as educational guidance, not an appraisal.
Common uses
- Jewelry
- Decorative objects
- Carvings
Interesting facts
- Name comes from Greek 'rhodon' meaning rose
- Official gem of Massachusetts, USA
- Russian Empress Maria Alexandrovna had an entire room decorated with rhodonite
Care & safety
Treat Rhodonite as a collector specimen unless hardness, cleavage, and fracture are confirmed.
Avoid inhaling dust. Do not cut, grind, or polish unknown specimens without eye protection and a properly rated respirator.
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