Rock Identifier
Faceted transparent gemstone, likely glass or cubic zirconia (Uncertain from image; possible cubic zirconia (zirconium dioxide, ZrO₂) or glass imitation) — gemstone
gemstone

Faceted transparent gemstone, likely glass or cubic zirconia

Uncertain from image; possible cubic zirconia (zirconium dioxide, ZrO₂) or glass imitation

AI-generated identification · may be incorrect

Colorless, transparent, faceted, and vitreous with strong reflections; cubic zirconia has Mohs hardness ~8.5 and specific gravity ~5.6–6.0, while glass is ~5–6. No cleavage is visible.

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Physical properties

Colorless, transparent, faceted, and vitreous with strong reflections; cubic zirconia has Mohs hardness ~8.5 and specific gravity ~5.6–6.0, while glass is ~5–6. No cleavage is visible.

Formation & geological history

If cubic zirconia, it is synthetic and lab-grown rather than naturally geological; natural zircon is a different mineral (ZrSiO₄) and is uncommon in this jewelry style. The setting appears manufactured.

Uses & applications

Used as an inexpensive diamond simulant in costume or fashion jewelry; value depends mainly on the metal setting and craftsmanship.

Geological facts

The image cannot reliably distinguish diamond, cubic zirconia, zircon, or glass. A loupe, refractive-index test, thermal conductivity test, and metal hallmark are needed for identification.

Field identification & locations

Inspect facet sharpness, inclusions, doubling, and setting hallmarks; test hardness only on an unimportant surface. The adjacent shell-shaped ornament is not a geological specimen.