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

Diamond

Carbon (C)

AI-generated identification · may be incorrect

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

Formation & geological history

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

Uses & applications

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

Geological facts

Diamonds are the hardest known natural substance on Earth and are often billions of years old.

Field identification & locations

Identified by extreme hardness, high refractive index, and thermal conductivity; commonly sourced from Africa, Russia, and Canada.