gemstone

Colorless faceted gemstone, likely synthetic cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂); natural diamond is a less likely alternative

AI-generated identification · may be incorrect

Colorless, transparent, adamantine-to-glassy luster, and brilliant faceting. Cubic zirconia has Mohs hardness about 8–8.5 and cubic crystal structure; diamond is Mohs 10 with an adamantine luster and octahedral cleavage. The photograph cannot confirm identity or distinguish it reliably from glass.

Identified September 16, 2026More gemstone →

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At a glance

Common name: Colorless faceted gemstone, likely synthetic cubic zirconia
Scientific name: Cubic zirconia (zirconium dioxide, ZrO₂); natural diamond is a less likely alternative
Category: gemstone
Identified: September 16, 2026
Method: Standard

AI Estimated Value

$1–$30 if cubic zirconia; potentially $500–$20,000+ if a genuine diamond, depending on size, cut, color, clarity, and certification

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

Cubic zirconia is laboratory-grown by melting zirconium oxide with stabilizers; it is not a natural rock. Natural diamond forms deep in Earth’s mantle under extreme pressure and temperature, commonly more than 1 billion years ago, then reaches the surface in kimberlite.

Uses & applications

Used as an inexpensive diamond simulant in jewelry and ornaments. Approximate value is $1–$30 for a loose common cubic-zirconia stone; a genuine diamond of similar appearance could range from hundreds to many thousands of dollars depending on carat weight and grading.

Geological facts

The large, intensely reflective appearance and visible facet pattern are consistent with a cut simulant, but image glare obscures inclusions and facet quality.

Field identification & locations

Check loupe magnification, refractive index, thermal conductivity, dispersion, and specific gravity; professional gemological testing is required. Cubic zirconia is commonly manufactured worldwide, while diamonds occur in kimberlite and alluvial deposits.