gemstone

Turquoise ring

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; the setting appears to be silver-colored metal

AI-generated identification · may be incorrect

Opaque, vivid blue to blue-green, polished cabochon with dark matrix-like markings; turquoise is triclinic, Mohs hardness 5–6, with a waxy to subvitreous luster. The photograph cannot confirm whether the stone is natural, stabilized, or imitation.

Identified September 25, 2026More gemstone →

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Physical properties

Formation & geological history

Turquoise forms as a secondary copper-bearing phosphate in the oxidized zones of arid-region deposits, commonly replacing host rock; deposits occur in the southwestern United States, Iran, China, and elsewhere. Its age depends on the deposit.

Uses & applications

Used in jewelry and ornamental objects; notable natural stones and well-made vintage rings may be collectible.

Geological facts

Turquoise’s color comes chiefly from copper, while iron can contribute green tones; dark veins are host-rock matrix, not a defining feature.

Field identification & locations

The blue cabochon and possible matrix are consistent with turquoise, but visual inspection alone cannot authenticate it. A jeweler or gem laboratory can assess treatments and imitations.