gemstone

Dark blue polished stone pendant

Indeterminate; possibly sodalite, lapis lazuli, or blue slag/glass-like material

AI-generated identification · may be incorrect

Opaque to weakly translucent, dark blue-black with reflective spots and an irregular polished/cut surface; hardness cannot be reliably determined from the image. The attached cord indicates jewelry use, and apparent glitter may be pyrite, mica, or surface inclusions.

Identified September 6, 2026More gemstone →

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Physical properties

Formation & geological history

If natural, it may be sodalite or lapis lazuli formed in alkaline igneous or metamorphic environments; the specimen could also be human-processed rock or synthetic material. Geological age and formation cannot be established visually.

Uses & applications

Likely a decorative pendant; comparable blue stones are used in beads, carvings, cabochons, and ornamental objects.

Geological facts

Lapis lazuli commonly contains blue lazurite with white calcite and metallic pyrite flecks; sodalite is typically blue with white veining and lacks abundant pyrite.

Field identification & locations

A clear identification requires better lighting, close-up detail, streak, hardness, and specific-gravity tests; inspect for white calcite veining or brassy pyrite. Common sources include Afghanistan and Chile for lapis, and Canada, Brazil, and Russia for sodalite.