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

Diamond

Carbon (C)

AI-generated identification · may be incorrect

Hardness of 10 on the Mohs scale, transparent to opaque with a greasy to adamantine luster, and crystallizes in the isometric system.

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Physical properties

Hardness of 10 on the Mohs scale, transparent to opaque with a greasy to adamantine luster, and crystallizes in the isometric system.

Formation & geological history

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

Uses & applications

Extensively used in fine jewelry and high-precision industrial cutting, drilling, and polishing tools due to its unmatched hardness.

Geological facts

Diamond is the hardest known natural material on Earth and is formed over 100 miles beneath the surface.

Field identification & locations

Identified by its extreme hardness, high refractive index, and adamantine luster; commonly found in alluvial deposits and kimberlite mines.