gemstone

Turquoise-colored stone bead necklace

Likely turquoise (CuAl₆(PO₄)₄(OH)₈·4H₂O), but the bead may be dyed or another blue-green stone

AI-generated identification · may be incorrect

The rounded bead is polished, blue-green with dark matrix-like mottling; turquoise has Mohs hardness 5–6, a waxy to dull luster, and a triclinic crystal structure. The image alone cannot confirm the bead’s material; the pendant appears to be a metal Chinese cash coin, not a geological specimen.

Identified September 26, 2026More gemstone →

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At a glance

Common name: Turquoise-colored stone bead necklace
Scientific name: Likely turquoise (CuAl₆(PO₄)₄(OH)₈·4H₂O), but the bead may be dyed or another blue-green stone
Category: gemstone
Identified: September 26, 2026
Method: Standard

AI Estimated Value

Approximately $5–$30 for a modest fashion necklace; value depends on whether the bead is genuine turquoise, its treatment, and workmanship.

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

Natural turquoise forms through near-surface alteration of copper-bearing rocks in arid environments; deposits range from geologically recent to hundreds of millions of years old. The bead has been shaped and polished.

Uses & applications

Turquoise is used in jewelry and ornamental objects; this piece is a necklace pendant.

Geological facts

Turquoise’s color comes chiefly from copper, while iron can contribute greener tones. Matrix patterns are host-rock remnants or, in imitations, may be artificially added.

Field identification & locations

Turquoise commonly occurs in Iran, the southwestern United States, China, and other arid regions. Confirm identity with gemological testing rather than relying on color alone.