mineral

Turquoise-bearing rock (likely turquoise in matrix)

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; commonly intergrown with limonite, iron oxides, or host rock

AI-generated identification · may be incorrect

Opaque blue-green to turquoise material with earthy to waxy luster; Mohs hardness 5–6, triclinic crystal system, usually massive rather than visibly crystalline. The specimen appears porous and matrix-rich, so color and hardness may vary substantially.

Identified September 16, 2026More mineral →

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At a glance

Common name: Turquoise-bearing rock (likely turquoise in matrix)
Scientific name: Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; commonly intergrown with limonite, iron oxides, or host rock
Category: mineral
Identified: September 16, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a small common matrix specimen; $50–$300+ for attractive, natural, untreated material, depending on locality and quality.

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, oxidized copper deposits when phosphate-bearing groundwater alters aluminum-rich rock. Most deposits are Cenozoic to relatively young, though turquoise occurrences span broad geological ages.

Uses & applications

Used as a cabochon, beads, carvings, and ornamental stone; historically important in jewelry and amulets. Matrix turquoise is often valued for natural patterns and is also used in collectible mineral specimens.

Geological facts

Common localities include Iran, the southwestern United States, Mexico, China, Chile, and Egypt. Natural turquoise is frequently stabilized with resin, so untreated material is generally more valuable.

Field identification & locations

Identify by its blue-green color, opaque appearance, moderate hardness, low density, and association with brown or gray matrix; avoid confusing dyed howlite or plastic. A laboratory test is needed to confirm composition and treatments.