mineral

Tumbled blue-green stone, possibly dyed turquoise or chrysocolla

Uncertain; turquoise is hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

AI-generated identification · may be incorrect

Opaque blue-green color with a dull-to-waxy luster and rounded tumbled form; apparent hardness is likely about Mohs 3–6, depending on material and treatments. The image is too blurred for reliable identification; it may also be dyed stone or glass.

Identified September 15, 2026More mineral →

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At a glance

Common name: Tumbled blue-green stone, possibly dyed turquoise or chrysocolla
Scientific name: Uncertain; turquoise is hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
Category: mineral
Identified: September 15, 2026
Method: Standard

AI Estimated Value

$1–$10 for a common tumbled or dyed piece; approximately $20–$200+ for natural, high-quality turquoise.

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 near-surface in arid copper deposits through weathering and groundwater alteration, commonly during the Cenozoic; chrysocolla forms similarly as a secondary copper mineral. Tumbled specimens are mechanically polished and may be stabilized or dyed.

Uses & applications

Used for cabochons, beads, ornaments, and inexpensive mineral collections; turquoise has longstanding jewelry and cultural significance.

Geological facts

Color alone cannot distinguish turquoise from chrysocolla, dyed howlite, dyed magnesite, or manufactured glass. A diagnostic identification requires close inspection, hardness, streak, magnification, and often chemical testing.

Field identification & locations

Common sources include Iran, the U.S. Southwest, Mexico, Chile, and China. Check for natural matrix, waxy texture, uniform dye concentration, and glass-like translucency; avoid destructive tests on valuable pieces.