gemstone

Cut diamond-like gemstone

Likely cubic zirconia (zirconium dioxide, ZrO₂) or glass; natural diamond (carbon, C) cannot be confirmed from an image

AI-generated identification · may be incorrect

Colorless, transparent, brilliant faceting and strong dispersion; apparent hardness and crystal structure cannot be determined visually. A diamond has Mohs hardness 10 and adamantine luster; cubic zirconia is about 8–8.5, while glass is about 5–6.

Identified September 19, 2026More gemstone →

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At a glance

Common name: Cut diamond-like gemstone
Scientific name: Likely cubic zirconia (zirconium dioxide, ZrO₂) or glass; natural diamond (carbon, C) cannot be confirmed from an image
Category: gemstone
Identified: September 19, 2026
Method: Standard

AI Estimated Value

About $1–$50 if glass or cubic zirconia; roughly $1,000 to $100,000+ if a genuine diamond, depending on carat weight, 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

If diamond, it formed deep in Earth’s mantle under extreme pressure and temperature, commonly over 1 billion years ago, then was mined and cut. Cubic zirconia is laboratory-grown; glass is industrially manufactured, so the image alone cannot distinguish them.

Uses & applications

Used as jewelry or a display stone; diamond has high commercial value, while cubic zirconia and glass are inexpensive simulants.

Geological facts

The large, unusually uniform stone and visible coloration strongly suggest a manufactured simulant rather than a natural diamond. Refractive-index, thermal-conductivity, or gemological testing is required for identification.

Field identification & locations

Check for a grading report, facet precision, inclusions, and setting marks; a jeweler can test it non-destructively. Natural diamonds occur in kimberlite and lamproite, whereas cubic zirconia is produced worldwide.