mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Hardness: 5.5-6.0 Mohs; Color: Royal blue to greyish blue with white veins; Luster: Vitreous to greasy; Crystal Structure: Isometric (cubic); Cleavage: Poor; Specific Gravity: 2.2-2.4

Hardness: 5
Color: Royal blue to greyish blue with white veins
Luster: Vitreous to greasy

Identified June 28, 2026More mineral →

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Physical properties

Hardness: 5.5-6.0 Mohs; Color: Royal blue to greyish blue with white veins; Luster: Vitreous to greasy; Crystal Structure: Isometric (cubic); Cleavage: Poor; Specific Gravity: 2.2-2.4

Formation & geological history

Formed in igneous rocks that crystallized from sodium-rich magmas (nepheline syenites) and sometimes in contact metamorphic rocks. Frequently found in pegmatitic environments.

Uses & applications

Used primarily as a gemstone for jewelry (beads, cabochons), ornamental carvings, and architectural elements. It is also a popular collector or 'healing' stone.

Geological facts

Sodalite is often confused with Lapis Lazuli, but it lacks the golden pyrite inclusions found in Lapis and is much less expensive. It belongs to the feldspathoid group of minerals.

Field identification & locations

Identify in the field by its intense blue color, white calcite streaks, and lack of pyrite. Commonly found in Canada (Ontario), Brazil, Namibia, and Greenland.