gemstone

Turquoise carving

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

AI-generated identification · may be incorrect

Opaque vivid blue to blue-green, typically waxy to subvitreous luster; Mohs hardness 5–6, cryptocrystalline aggregate, no obvious cleavage, specific gravity about 2.6–2.9. The irregular shape appears carved and polished, possibly stabilized or dyed.

Identified August 9, 2026More gemstone →

Explore Turquoise carving in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms as a secondary mineral in arid, copper-rich, aluminum- and phosphate-bearing rocks through groundwater alteration, commonly during weathering of porphyry copper deposits. Deposits range from Precambrian to young Cenozoic ages.

Uses & applications

Used for beads, cabochons, carvings, inlay, and ornamental objects; historically important in jewelry and ceremonial art. Lower-grade material is often stabilized with resin or reconstituted.

Geological facts

Authentic turquoise commonly shows natural matrix veining, though this specimen appears unusually uniform and may be treated or an imitation. It can darken with skin oils, cosmetics, and prolonged moisture exposure.

Field identification & locations

Common sources include Arizona, Nevada, New Mexico, Iran, China, Tibet, Chile, and Mexico. Field clues include blue-green color, moderate softness, opaque appearance, and lack of glassy transparency; avoid destructive tests on a finished carving.