mineral

Charoite

Charoite (K(Ca,Na)2Si4O10(OH,F)·H2O)

Hardness: 5-6 (Mohs); Color: Violet, lilac, lavender with swirling white/black patterns; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Specific gravity: 2.54-2.58

Hardness: 5-6 (Mohs)
Color: Violet, lilac, lavender with swirling white/black patterns
Luster: Vitreous to pearly

Identified May 4, 2026More mineral →

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Physical properties

Hardness: 5-6 (Mohs); Color: Violet, lilac, lavender with swirling white/black patterns; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Specific gravity: 2.54-2.58

Formation & geological history

Formed via contact metamorphism where alkali syenite intrusions interacted with limestone. It is found exclusively in the Chary River area of the Aldan Shield, Siberia, Russia.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons, beads), decorative carvings, and as a popular lapidary material for collectors.

Geological facts

Charoite is one of the rarest gemstones in the world because it is only found in one location on Earth. It was discovered in the 1940s but remained unknown to the western world until 1978.

Field identification & locations

Look for the distinctive swirling patterns of purple, white quartz, and black aegirine. It is rarely found as crystal aggregates and more commonly as massive forms. Authenticate by its unique location-based provenance.