mineral

Charoite

(K,Na)5Ca6Si12O30(OH,F)Â·nH2O

Hardness: 5 to 6 on the Mohs scale. Color: Distinctive vivid purple, violet, lilac, or plum with swirling white, black, or grey streaks. Luster: Vitreous to pearly, silky when fibrous. Crystal structure: Monoclinic, typically massive or fibrous. Cleavage: Good in one direction. Specific gravity: 2.54 to 2.78.

Hardness: 5 to 6 on the Mohs scale
Luster: Vitreous to pearly, silky when fibrous

Identified August 1, 2026More mineral →

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Physical properties

Formation & geological history

Formed through metasomatism (contact metamorphism) involving alkaline syenite intruding into limestone, causing unique chemical alterations. Found almost exclusively in one region of the world.

Uses & applications

Used primarily as a gemstone for cabochons, beads, inlay work, and ornamental carvings set in jewelry such as rings and pendants.

Geological facts

Charoite was only discovered in the 1940s and was introduced to the wider world in 1978. Its name comes from the Chara River near where it was found in Siberia.

Field identification & locations

Easily identified by its unique, swirling chatoyant purple and white fibrous patterns. It is found almost exclusively along the Chara River in the Sakha Republic, Siberia, Russia.