mineral

Raw turquoise-bearing rock

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, likely in a limonite/chalcedony host

AI-generated identification · may be incorrect

Turquoise is typically cryptocrystalline, opaque, and blue-green with a waxy to dull luster; hardness is 5–6 and specific gravity about 2.6–2.9. The specimen shows blue-green material with brown iron-oxide matrix and irregular fracture rather than obvious cleavage.

Identified September 2, 2026More mineral →

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At a glance

Common name: Raw turquoise-bearing rock
Scientific name: Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O, likely in a limonite/chalcedony host
Category: mineral
Identified: September 2, 2026
Method: Standard

AI Estimated Value

Approximately $5–$30 as a common rough matrix specimen; attractive natural turquoise suitable for cutting may range from $50 to several hundred dollars.

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

Turquoise forms as a secondary phosphate mineral when copper-rich groundwater alters aluminum- and phosphorus-bearing rocks, commonly in arid climates. Deposits are generally young geologically, forming during near-surface weathering over millions of years.

Uses & applications

Used as a cabochon gemstone, beads, carvings, and ornamental inlay; matrix-rich material is also collected as a mineral specimen. Low-grade turquoise may be stabilized with resin for jewelry.

Geological facts

Its blue-green color reflects copper, while yellow-brown to dark matrix commonly consists of limonite or host rock. Color can fade or change with heat, chemicals, prolonged sunlight, or oil absorption.

Field identification & locations

Common localities include Iran, the southwestern United States, Mexico, China, Chile, and Egypt. Identify it by blue-green opaque color, moderate hardness, porous/waxy appearance, and copper reactions; avoid confusing dyed howlite or chrysocolla.