Sodalite

Sodalite Crystals

Sodalite is a tectosilicate mineral with the formula Na₈(Al₆Si₆O₂₄)Cl₂, crystallizing in the cubic system. Its rich, royal blue color — often interwoven with veins of white calcite — makes it one of the most visually striking blue minerals available to collectors. Sodalite registers 5.5–6 on the Mohs hardness scale and is primarily sourced from Brazil, Canada, Namibia, and India.

First described in 1811 from specimens found in Greenland, sodalite gained widespread popularity after large deposits were discovered in Ontario, Canada, in 1891. It is a member of the feldspathoid group, meaning it forms in silica-undersaturated igneous rocks. Sodalite is sometimes confused with lapis lazuli, but experienced collectors can distinguish it by its lack of pyrite inclusions and its lighter, more uniform blue tone.

Available forms include tumbled stones, palm stones, polished spheres, freeforms, bracelets, and raw specimens. For other blue minerals, see our lapis lazuli, kyanite, and labradorite collections. Browse crystal jewelry for sodalite pendants and pieces. Free shipping on orders $150+.

Frequently Asked Questions

What is sodalite?

Sodalite is a sodium aluminum silicate chloride mineral that crystallizes in the cubic system. It is known for its deep royal blue color, often with white calcite veining, and rates 5.5–6 on the Mohs hardness scale. It belongs to the feldspathoid mineral group.

What is the difference between sodalite and lapis lazuli?

Both are blue minerals, but they differ in composition and appearance. Lapis lazuli is a rock (composed of lazurite, calcite, and pyrite) while sodalite is a single mineral species. Sodalite typically has a lighter, more uniform blue without the golden pyrite flecks characteristic of lapis. Sodalite also tends to show more prominent white calcite veining.

Where does sodalite come from?

Major sources include Brazil, Canada (Ontario, where large deposits were discovered in 1891), Namibia, India, and Greenland (the original discovery locality in 1811). Canadian sodalite has been used in architectural decoration, including panels in the Royal Ontario Museum.

Can sodalite get wet?

Brief water exposure is generally safe for sodalite at Mohs 5.5–6. However, prolonged soaking is not recommended as it can affect the polish and potentially cause the white calcite inclusions to react. Clean with a damp soft cloth and dry promptly.

What is Hackmanite?

Hackmanite is a rare sulfur-rich variety of sodalite that exhibits tenebrescence — it changes color when exposed to UV light, shifting from pale pink to deep violet, then slowly fading back in visible light. It is one of the few minerals that displays this reversible photochromic effect.

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