Rock Identifier
Diamond (Carbon (C)) — gemstone
gemstone

Diamond

Carbon (C)

AI-generated identification · may be incorrect

Mohs hardness of 10, adamantine luster, isometric crystal system, perfect octahedral cleavage, specific gravity of 3.51.

Identified More gemstone →
Explore Diamond in the encyclopedia →

Identify your own rocks.

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

Physical properties

Mohs hardness of 10, adamantine luster, isometric crystal system, perfect octahedral cleavage, specific gravity of 3.51.

Formation & geological history

Formed deep within the Earth's mantle under extreme pressure and temperature, brought to the surface via kimberlite pipes.

Uses & applications

Extensively used in fine jewelry, cutting tools, industrial abrasives, and high-precision scientific equipment.

Geological facts

Diamond is the hardest known natural material on Earth and forms over billions of years.

Field identification & locations

Identified by its extreme hardness, high refractive index, and thermal conductivity; mined majorly in Russia, Africa, and Canada.