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

Diamond (or Cubic Zirconia simulant)

Carbon (C) / Zirconium Dioxide (ZrO2 if synthetic)

AI-generated identification · may be incorrect

Mohs hardness 10 (8-8.5 for CZ); colorless/white; adamantine luster; isometric crystal system; specific gravity 3.52 (5.6-6.0 for CZ).

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 (8-8.5 for CZ); colorless/white; adamantine luster; isometric crystal system; specific gravity 3.52 (5.6-6.0 for CZ).

Formation & geological history

Natural diamonds form deep in Earth's mantle under extreme pressure and temperature, brought up via kimberlite eruptions billion of years ago.

Uses & applications

Primary gemstone used in fine jewelry such as rings, alongside extensive industrial uses in cutting, grinding, and drilling tools.

Geological facts

Diamond is the hardest known natural mineral on Earth, consisting entirely of carbon atoms arranged in an exceptionally rigid crystal lattice.

Field identification & locations

Identified by high thermal conductivity, extreme hardness, and brilliant adamantine luster. Common natural sources include Russia, Botswana, Canada, and South Africa.