gemstone

Turquoise bead bracelet

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; the beads may be treated or imitation material

AI-generated identification · may be incorrect

Opaque sky-blue, polished beads with a waxy to vitreous luster; Mohs hardness 5–6, triclinic crystal structure, and no prominent cleavage. The photo alone cannot confirm the beads’ composition or treatments.

Identified October 9, 2026More gemstone →

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Physical properties

Formation & geological history

Natural turquoise forms when copper-rich fluids alter aluminum- and phosphorus-bearing rocks near Earth’s surface. Deposits occur in arid regions and are generally geologically young relative to their host rocks.

Uses & applications

Used chiefly for beads, jewelry, ornament, and collectible carvings; turquoise is also a minor copper ore.

Geological facts

Turquoise’s color comes mainly from copper; iron can shift it toward green. Beads are commonly stabilized, dyed, or made from imitation materials.

Field identification & locations

Check for natural matrix, uneven color, and wear, but these clues are not conclusive; gemological testing is needed to authenticate it. Important sources include Iran, the southwestern United States, China, and Mexico.