Rock Identifier
Turquoise-bead bracelet (likely dyed howlite or magnesite; material uncertain) (Turquoise is hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; the beads may instead be dyed Ca-Mg carbonate minerals) — gemstone
gemstone

Turquoise-bead bracelet (likely dyed howlite or magnesite; material uncertain)

Turquoise is hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; the beads may instead be dyed Ca-Mg carbonate minerals

AI-generated identification · may be incorrect

Opaque blue-green, polished beads with a vitreous-to-waxy luster; true turquoise has Mohs hardness 5–6 and triclinic crystals, while common imitations are often softer. The gold-colored clasp appears to be metal, not geological material.

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Physical properties

Opaque blue-green, polished beads with a vitreous-to-waxy luster; true turquoise has Mohs hardness 5–6 and triclinic crystals, while common imitations are often softer. The gold-colored clasp appears to be metal, not geological material.

Formation & geological history

Natural turquoise forms through groundwater alteration of copper-rich rocks in arid environments, commonly in deposits millions of years old. Beads are shaped and polished; color alone cannot distinguish turquoise from dyed substitutes.

Uses & applications

Jewelry and ornament; turquoise is also collected as a gemstone. The bracelet’s value depends on bead material, quality, and clasp.

Geological facts

Bright, even blue color can indicate treated turquoise or dyed imitation; a photograph cannot establish composition.

Field identification & locations

Look for natural matrix veining and verify with a gemologist; avoid destructive tests on finished jewelry. Turquoise occurs notably in the southwestern United States, Iran, China, and Egypt.