mineral

Blue tumbled stone, possibly sodalite

Unidentified blue mineral; sodalite (Na₈(Al₆Si₆O₂₄)Cl₂) is one possibility

AI-generated identification · may be incorrect

Small, polished blue piece with an opaque appearance; the image does not show enough detail to confirm its mineral, hardness, luster, or crystal structure. Sodalite is typically Mohs 5.5–6, with a vitreous to greasy luster and white streak.

Identified September 25, 2026More mineral →

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Physical properties

Formation & geological history

If sodalite, it formed in silica-poor, sodium-rich igneous rocks such as nepheline syenite; its age depends on the deposit. The specimen’s appearance alone cannot establish its identity or geological age.

Uses & applications

Blue stones are commonly tumbled for collecting, crafts, and jewelry; sodalite is also used for ornamental objects and decorative stone.

Geological facts

Sodalite is often royal blue with white calcite veining, but the pictured stone’s smooth, uniformly blue surface is not diagnostic.

Field identification & locations

Identification requires closer inspection or simple tests; compare hardness and streak, and look for characteristic veining. Sodalite occurs in deposits in Canada, Brazil, and Namibia.