Charoite

Physical Properties

Hardness: 5-6 (Mohs); Color: Violet, lilac, or lavender with swirls of white, black, or gray; Luster: Vitreous to pearly; Crystal Structure: Monoclinic; Cleavage: Good; Specific Gravity: 2.5-2.6

Formation & Geological History

Formed through contact metamorphism where alkali syenite intrusions interacted with limestone/dolomite deposits. It is specifically associated with the Murun Massif and is thought to be from the Mesozoic era.

Uses & Applications

Used primarily as a decorative gemstone, for jewelry (cabochons), carvings, and ornamental objects like bookends or vases.

Geological Facts

Charoite is one of the rarest gemstones on Earth because it is found in only one location: the Murun Massif in the Sakha Republic, Siberia, Russia. It was discovered in the 1940s but omitted from Western mineralogy until 1978.

Field Identification & Locations

Identify by its unique 'swirling' or chatoyant purple appearance which is unlike almost any other mineral. Look for associated black aegirine or orange tinaksite. Collectors should look for depth of color and minimal black inclusions.

Identified on: 4/29/2026

Mode: Standard