gemstone

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

AI-generated identification · may be incorrect

The central stone is opaque green-blue with a polished cabochon surface and possible mottling; hardness is typically Mohs 5–6, waxy to subvitreous luster, cryptocrystalline structure, and no visible cleavage. The surrounding blue-gray and clear accents may be glass, synthetic stones, or additional minerals.

Identified August 11, 2026More gemstone →

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At a glance

Common name: Green cabochon gemstone pendant, likely turquoise or dyed green turquoise
Scientific name: Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing
Category: gemstone
Identified: August 11, 2026
Method: Standard

AI Estimated Value

About $10–$75 for common assembled or treated jewelry; approximately $100–$500+ if confirmed natural, high-quality turquoise in a precious-metal setting.

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 as a secondary phosphate mineral in arid, oxidized zones of copper deposits, commonly during the Cenozoic. The jewelry setting is human-processed, but the central material may be natural, stabilized, reconstituted, or dyed.

Uses & applications

Used in cabochon jewelry, carvings, ornaments, and collectibles; turquoise has cultural significance in Native American, Persian, and Central Asian jewelry traditions.

Geological facts

Green coloration commonly reflects iron substitution for aluminum; blue coloration reflects higher copper content. Plastic, glass, dyed howlite, and reconstituted turquoise can look similar.

Field identification & locations

Check for a natural waxy texture, irregular matrix, moderate hardness, and density around 2.6–2.8; avoid destructive tests on jewelry. The photograph cannot confirm turquoise, and the blue-gray side stones may not be geological specimens.