gemstone

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation

AI-generated identification · may be incorrect

Colorless, transparent, brilliant vitreous luster, oval mixed brilliant cut, and no visible natural inclusions. Cubic zirconia has Mohs hardness ~8–8.5, cubic crystal structure, specific gravity ~5.6–6.0, and no cleavage; the photograph alone cannot distinguish it definitively from diamond or glass.

Identified August 8, 2026More gemstone →

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At a glance

Common name: Colorless faceted gemstone (likely cubic zirconia)
Scientific name: Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation
Category: gemstone
Identified: August 8, 2026
Method: Standard

AI Estimated Value

About $1–$30 if cubic zirconia; roughly $10–$100 if synthetic quartz or glass. A diamond could range from hundreds to many thousands of dollars, requiring laboratory verification.

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

Most likely laboratory-grown cubic zirconia, crystallized synthetically from zirconium oxide; it is not a natural rock. Natural zircon is geologically unrelated and forms in igneous rocks over millions to billions of years.

Uses & applications

Used as an inexpensive diamond simulant in jewelry and costume pieces; also used in optical and industrial ceramics. If genuine diamond, value would be vastly higher, but its appearance alone does not establish that.

Geological facts

Strong rainbow flashes and a slightly bulky, highly reflective appearance are consistent with cubic zirconia. Diamond has Mohs hardness 10 and commonly shows sharper facet definition and different optical behavior.

Field identification & locations

Check with a gem tester, specific-gravity measurement, loupe, or professional appraisal; do not rely on a scratch test, which can damage it. The Santiago-region location does not meaningfully narrow identification because this appears cut and commercially manufactured.