gemstone

Turquoise bead earrings

Turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

AI-generated identification · may be incorrect

The polished blue-green beads show dark matrix-like veining, consistent with turquoise, though the photo cannot rule out dyed stone or imitation. Turquoise is typically Mohs 5–6, opaque with a waxy to vitreous luster, and has a triclinic crystal structure.

Identified October 9, 2026More gemstone →

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Physical properties

Formation & geological history

Turquoise forms when copper-rich fluids alter aluminum- and phosphorus-bearing rocks, commonly in arid-zone deposits. Deposits range in age; the earrings’ source and any treatment cannot be determined from the image.

Uses & applications

Used in jewelry and ornamental objects; these beads are set as earrings.

Geological facts

Turquoise color varies with copper and iron content, and many commercial beads are stabilized or dyed.

Field identification & locations

Look for natural color variation and matrix veining; imitation materials can look similar, so testing or provenance is needed. Turquoise occurs in regions including the southwestern United States, Iran, China, and Egypt.