mineral

Dyed howlite or turquoise imitation

Howlite: Ca₂B₅SiO₉(OH)₅; turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O

AI-generated identification · may be incorrect

Polished opaque blue cabochon with faint gray-white veining, waxy to vitreous luster, and no visible crystals. Howlite has Mohs hardness 3.5; turquoise is 5–6, with specific gravity about 2.5–2.8.

Identified August 11, 2026More mineral →

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At a glance

Common name: Dyed howlite or turquoise imitation
Scientific name: Howlite: Ca₂B₅SiO₉(OH)₅; turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O
Category: mineral
Identified: August 11, 2026
Method: Standard

AI Estimated Value

About $2–$15 for a small dyed howlite cabochon; comparable natural turquoise typically ranges from $10–$200+, depending on color, matrix, origin, 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

The vivid, uniform blue and pale vein pattern strongly suggest blue-dyed howlite, a common turquoise simulant; natural turquoise forms in arid copper-rich zones during secondary weathering, generally in relatively young oxidation deposits.

Uses & applications

Used as inexpensive jewelry, beads, carvings, and cabochons. Genuine turquoise has greater jewelry and collector value; dyed howlite is mainly ornamental.

Geological facts

Howlite is naturally white and porous, readily accepting dye. Acetone or alcohol may remove dye from inconspicuous areas, while a hot needle can damage or discolor treated material.

Field identification & locations

Field identification requires testing: turquoise is usually harder and copper-bearing, whereas dyed howlite may show concentrated blue in cracks and a white interior under a discreet scratch or drilled area. Common sources include China and the United States.