mineral

Polished dark-blue cabochon, possibly blue sodalite

Undetermined; blue sodalite is a possible identification (Na₈Al₆Si₆O₂₄Cl₂)

AI-generated identification · may be incorrect

Small, smoothly polished, opaque-to-translucent deep-blue stone with a vitreous sheen. If sodalite, hardness is 5.5–6 Mohs and its crystals are cubic; the photo alone cannot confirm the material or cleavage.

Identified September 26, 2026More mineral →

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Physical properties

Formation & geological history

Could be a cut and polished natural mineral; sodalite forms in silica-poor igneous rocks, commonly millions to billions of years old. Identification and geological age cannot be established from the image.

Uses & applications

Cabochons are used in jewelry and ornamental crafts; this loose piece may also be a decorative or craft stone.

Geological facts

Several minerals and dyed materials can look similar when polished; color alone is not diagnostic.

Field identification & locations

Check for natural veining or inclusions and seek mineralogical testing; sodalite is notably found in Canada, Brazil, and Namibia. A closer view or hardness, streak, and specific-gravity tests would help identify it.