gemstone

Turquoise ring stone (likely stabilized or dyed turquoise)

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

AI-generated identification · may be incorrect

Blue to blue-green, typically opaque with a waxy to subvitreous luster; Mohs hardness 5–6, cryptocrystalline structure, no prominent cleavage, and specific gravity about 2.6–2.9. The photograph shows a polished cabochon set in metal, with possible matrix or treatment.

Identified September 2, 2026More gemstone →

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At a glance

Common name: Turquoise ring stone (likely stabilized or dyed turquoise)
Scientific name: Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
Category: gemstone
Identified: September 2, 2026
Method: Standard

AI Estimated Value

About $10–$100 for common treated jewelry stones; $100–$1,000+ for larger, natural, high-grade turquoise with attractive matrix and documented provenance.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Forms as a secondary mineral in arid, copper-rich zones through weathering and groundwater alteration of aluminum-bearing rocks. Important deposits occur in Iran, the southwestern United States, China, Egypt, and Chile; its geological age varies by deposit.

Uses & applications

Used primarily in rings, beads, carvings, and ornamental objects; historically valued as a talisman and decorative gemstone. Stabilization with resin is common for jewelry durability, while dyed imitations also occur.

Geological facts

Turquoise is among the earliest gemstones used by humans. Its color can darken or change with porosity, oils, heat, and chemicals.

Field identification & locations

Identify it by its opaque blue-green color, relatively soft surface, and nonmetallic luster; genuine material may show brown or black limonite matrix. Exact identification requires testing or examination outside the setting, since dyed howlite, magnesite, and composite stones can look similar.