gemstone

Carved turquoise beads

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O

AI-generated identification · may be incorrect

Opaque blue-green beads with carved decoration and a polished surface; turquoise is typically Mohs 5–6, triclinic, and has a waxy to dull luster. The beads appear shaped and possibly treated; the image alone cannot confirm the material or treatment.

Identified October 3, 2026More gemstone →

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Physical properties

Formation & geological history

Turquoise forms as a secondary copper-bearing phosphate in oxidized zones of copper deposits, commonly in arid regions. Its age varies by deposit; the beads were subsequently carved and polished.

Uses & applications

Used chiefly in jewelry and decorative objects; it is also collected as a gemstone.

Geological facts

Turquoise has been valued in jewelry for thousands of years. Similar-looking dyed stones and imitation materials are common, so visual identification is not definitive.

Field identification & locations

Natural turquoise often shows blue-to-green color with a matrix of host-rock veins and is found in places including Iran, the southwestern United States, and China. Check for natural matrix and seek gemological testing to verify material and treatments.