gemstone

Colorless faceted gemstone, likely glass or cubic zirconia

Probably cubic zirconia (zirconium dioxide, ZrO₂); diamond cannot be confirmed visually

AI-generated identification · may be incorrect

Colorless, transparent, brilliant vitreous luster, and faceted cut. Cubic zirconia has Mohs hardness ~8–8.5 and specific gravity ~5.6–6.0; diamond is harder (10) and lighter in density (3.52).

Identified September 14, 2026More gemstone →

Explore Colorless faceted gemstone, likely glass or cubic zirconia in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Colorless faceted gemstone, likely glass or cubic zirconia
Scientific name: Probably cubic zirconia (zirconium dioxide, ZrO₂); diamond cannot be confirmed visually
Category: gemstone
Identified: September 14, 2026
Method: Standard

AI Estimated Value

About $1–$50 if cubic zirconia or glass; roughly $50–$500 if quality synthetic moissanite. A genuine diamond of this apparent size could be worth hundreds to many thousands of USD, requiring 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

Colorless, transparent, brilliant vitreous luster, and faceted cut. Cubic zirconia has Mohs hardness ~8–8.5 and specific gravity ~5.6–6.0; diamond is harder (10) and lighter in density (3.52).

Formation & geological history

Cubic zirconia is laboratory-grown, commonly by skull melting, rather than geologically formed; it is a modern diamond simulant. The photograph cannot reliably exclude cut glass or synthetic moissanite.

Uses & applications

Used in inexpensive jewelry and decorative items; value depends on material, cut, size, and certification. It is not identifiable as natural diamond from appearance alone.

Geological facts

Strong rainbow “fire,” doubled facet edges, bubbles, or scratches may indicate a simulant. A diamond tester alone can be misleading because some simulants conduct heat similarly.

Field identification & locations

Confirm with refractive-index, thermal-conductivity, loupe, and professional gemological testing; do not use scratch tests. Commonly sold worldwide as cubic zirconia or simulated diamond.