mineral

Composite Turquoise or Reconstituted Turquoise with Copper inclusions

CuAl6(PO4)4(OH)8·4H2O (Turquoise) mixed with matrix and copper/bronze flakes

Hardness: 5-6 (base turquoise), Color: Blue-green with brown/bronze/gold streaks and flakes, Luster: Waxy to subvitreous, Crystal structure: Triclinic (rarely seen, usually cryptocrystalline)

Identified June 17, 2026More mineral →

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Physical properties

Hardness: 5-6 (base turquoise), Color: Blue-green with brown/bronze/gold streaks and flakes, Luster: Waxy to subvitreous, Crystal structure: Triclinic (rarely seen, usually cryptocrystalline)

Formation & geological history

Secondary mineral formed in oxidation zones of copper deposits. This specific item appears to be composite, reconstituted, or stabilized turquoise, where crushed turquoise is mixed with resin and metallic flakes (like copper or bronze) to create a striking pattern.

Uses & applications

Used primarily in jewelry, cabochons, and ornamental pieces.

Geological facts

True turquoise with natural copper inclusions exists (often called 'copper-bearing turquoise'), but pieces with highly uniform, shiny metallic flakes mixed with a synthetic-looking matrix are often stabilized, reconstituted, or block turquoise designed to imitate higher-end materials.

Field identification & locations

Identify by the uniform distribution of metallic flakes and the plastic sheen if resin is used. Natural turquoise with real copper veins usually has a more irregular, natural looking matrix. A hot point test can sometimes reveal resin in stabilized/composite stones.

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