mineral

Tumbled sodalite

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

AI-generated identification · may be incorrect

Typically deep blue with white calcite mottling and a vitreous-to-greasy luster; Mohs hardness 5.5–6, cubic crystal system, poor cleavage. The rounded shape and polish indicate a tumbled specimen.

Identified October 9, 2026More mineral →

Explore Tumbled sodalite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Typically deep blue with white calcite mottling and a vitreous-to-greasy luster; Mohs hardness 5.5–6, cubic crystal system, poor cleavage. The rounded shape and polish indicate a tumbled specimen.

Formation & geological history

Sodalite crystallizes in silica-poor, sodium-rich igneous rocks, especially nepheline syenite; it formed during cooling of magma, with age depending on its source deposit.

Uses & applications

Used as a decorative stone, in carvings and beads, and occasionally as an ornamental substitute for lapis lazuli.

Geological facts

Unlike lapis lazuli, sodalite generally lacks pyrite flecks and is usually less intensely colored; strong blue fluorescence may occur in some specimens.

Field identification & locations

Identify by its blue color, white veining, and lack of typical lapis pyrite; notable deposits occur in Canada, Brazil, Namibia, and Greenland. A small common tumbled stone typically sells for about $2–$10 USD.