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

Diamond

Carbon (C)

AI-generated identification · may be incorrect

Hardness of 10 on the Mohs scale, isometric crystal system, adamantine luster, and perfect octahedral cleavage.

Identified More gemstone →
Explore Diamond in the encyclopedia →

Identify your own rocks.

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

Physical properties

Hardness of 10 on the Mohs scale, isometric crystal system, adamantine luster, and perfect octahedral cleavage.

Formation & geological history

Formed deep within Earth's mantle under extreme pressure and temperature, transported to the surface via kimberlite pipes over billions of years.

Uses & applications

Extensively used in high-end fine jewelry and utilized in heavy-duty industrial cutting, grinding, and drilling tools.

Geological facts

Diamond is the hardest naturally occurring substance on Earth and conducts heat up to five times better than copper.

Field identification & locations

Identified by its extreme hardness, high refractive index, and specific gravity around 3.51; found in alluvial deposits and kimberlite mines globally.