mineral

Turquoise-colored rough specimen, possibly dyed howlite or magnesite

Unconfirmed; turquoise is CuAl₆(PO₄)₄(OH)₈·4H₂O, while common turquoise imitations include dyed Ca₂B₅SiO₉(OH)₅ (howlite)

AI-generated identification · may be incorrect

Opaque, vivid blue-green, rough and uneven, with a dull to waxy luster. The photo alone cannot establish hardness or crystal structure; turquoise is Mohs 5–6, while howlite is about 3.5.

Identified October 14, 2026More mineral →

Explore Turquoise-colored rough specimen, possibly dyed howlite or magnesite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Turquoise-colored rough specimen, possibly dyed howlite or magnesite
Scientific name: Unconfirmed; turquoise is CuAl₆(PO₄)₄(OH)₈·4H₂O, while common turquoise imitations include dyed Ca₂B₅SiO₉(OH)₅ (howlite)
Category: mineral
Identified: October 14, 2026
Method: Standard

AI Estimated Value

Approximately $1–$20 for a small unverified specimen; genuine turquoise value varies widely with quality and provenance.

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

Opaque, vivid blue-green, rough and uneven, with a dull to waxy luster. The photo alone cannot establish hardness or crystal structure; turquoise is Mohs 5–6, while howlite is about 3.5.

Formation & geological history

If natural turquoise, it forms through near-surface alteration of aluminum-rich rocks by copper-bearing fluids, commonly in arid regions. Its age depends on the deposit; the specimen’s identity and geological history cannot be confirmed visually.

Uses & applications

Turquoise is used in jewelry and ornament, and as a collectible mineral. Dyed lookalikes are generally inexpensive decorative material.

Geological facts

Color alone is not diagnostic: turquoise, dyed minerals, and imitation materials can look alike. A close examination or gemological test is needed for reliable identification.

Field identification & locations

Natural turquoise commonly occurs in copper deposits in the southwestern United States, Iran, and parts of China. Check for natural-looking color variation and matrix, but use professional testing rather than destructive tests to distinguish imitations.