gemstone

Colorless faceted gemstone, likely cubic zirconia or diamond

Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)

AI-generated identification · may be incorrect

Round brilliant-style faceting, colorless appearance, and strong flash; hardness is Mohs 8–8.5 for cubic zirconia or 10 for diamond. Specific gravity is about 5.6–6.0 for cubic zirconia versus 3.52 for diamond; luster is adamantine.

Identified September 12, 2026More gemstone →

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At a glance

Common name: Colorless faceted gemstone, likely cubic zirconia or diamond
Scientific name: Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)
Category: gemstone
Identified: September 12, 2026
Method: Standard

AI Estimated Value

About $1–$50 if cubic zirconia; approximately $100–$10,000+ for a natural diamond depending on carat weight, color, clarity, cut, 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

A diamond forms deep in Earth’s mantle under extreme pressure, commonly 1–3.5 billion years ago, and reaches the surface in kimberlite. Cubic zirconia is synthetic, crystallized industrially and not naturally formed in ordinary specimens.

Uses & applications

Used in jewelry as a diamond or diamond simulant; cubic zirconia is inexpensive, while natural diamond has major gem value. Identification requires refractive-index, thermal-conductivity, or professional testing.

Geological facts

The photograph alone cannot reliably distinguish diamond from cubic zirconia, moissanite, or glass. Facet appearance and apparent brilliance suggest a cut gemstone, not a raw mineral crystal.

Field identification & locations

Check loupe magnification, facet-edge sharpness, inclusions, and whether it fogs briefly from breath; these are only screening clues. A gemological refractometer or certified laboratory report is necessary for identification.