Rock Identifier
Diamond (or Cubic Zirconia simulant) (Carbon (C) / Zirconium dioxide (ZrO2)) — gemstone
gemstone

Diamond (or Cubic Zirconia simulant)

Carbon (C) / Zirconium dioxide (ZrO2)

AI-generated identification · may be incorrect

Mohs hardness 10 (diamond) or 8.5 (CZ); adamantine luster, isometric/cubic crystal system, high refractive index producing brilliant fire.

Identified More gemstone →
Explore Diamond (or Cubic Zirconia simulant) in the encyclopedia →

Identify your own rocks.

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

Physical properties

Mohs hardness 10 (diamond) or 8.5 (CZ); adamantine luster, isometric/cubic crystal system, high refractive index producing brilliant fire.

Formation & geological history

Natural diamonds form deep within Earth's mantle under extreme pressure and heat, brought up via kimberlite eruptions; simulants like CZ are synthetically crystallized.

Uses & applications

Extensively cut and polished for fine jewelry; industrial varieties are vital for precision cutting, drilling, and grinding tools.

Geological facts

Diamond is the hardest known natural mineral and is composed of pure carbon identical in basic chemistry to graphite.

Field identification & locations

Identified by remarkable brilliance, heat conductivity, and extreme hardness; natural stones originate mainly in Russia, Botswana, and Canada.