gemstone

Clear faceted gemstone, likely synthetic cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂); visual identification is not definitive and diamond or synthetic moissanite are alternatives

AI-generated identification · may be incorrect

Colorless, transparent, adamantine luster, brilliant faceting, and no visible natural inclusions. Cubic zirconia has Mohs hardness about 8–8.5 and cubic crystal structure; the surrounding setting appears metallic, not geological.

Identified September 12, 2026More gemstone →

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At a glance

Common name: Clear faceted gemstone, likely synthetic cubic zirconia
Scientific name: Cubic zirconia (zirconium dioxide, ZrO₂); visual identification is not definitive and diamond or synthetic moissanite are alternatives
Category: gemstone
Identified: September 12, 2026
Method: Standard

AI Estimated Value

About $1–$30 for the loose synthetic stone; approximately $10–$100 for the visible costume-jewelry piece, depending on metal and workmanship.

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

Usually lab-grown by melting zirconium oxide with stabilizers; it is not a natural rock. Natural zirconium minerals formed in igneous rocks over geologic time, but this cut stone is probably manufactured.

Uses & applications

Common diamond simulant in jewelry and costume jewelry. Value is generally decorative rather than collectible.

Geological facts

Cubic zirconia is optically bright and typically heavier than diamond; synthetic moissanite is harder (about 9.25) and often shows rainbow doubling under magnification.

Field identification & locations

The round brilliant cut, extreme clarity, and uniform appearance favor a manufactured simulant. Confirm with refractive-index, thermal/electrical conductivity, or gemological testing; avoid scratch tests.