mineral

Diamond

Carbon (C)

Hardness: 10 (Mohs scale), Color: Colorless to faint yellow/brown in this specimen, Luster: Adamantine, Crystal Structure: Cubic/Isometric, Cleavage: Perfect octahedral, Specific Gravity: 3.52.

Identified May 30, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale), Color: Colorless to faint yellow/brown in this specimen, Luster: Adamantine, Crystal Structure: Cubic/Isometric, Cleavage: Perfect octahedral, Specific Gravity: 3.52.

Formation & geological history

Formed under extreme high pressure and temperature conditions deep (150-200km) in the Earth's mantle over billions of years, brought to the surface by kimberlite eruptions.

Uses & applications

Primary use in jewelry as a gemstone and in industry for cutting, grinding, and drilling tools due to extreme hardness.

Geological facts

Diamonds are the hardest known natural substance on Earth. They are composed of pure carbon atoms arranged in a crystal lattice structure that is incredibly strong.

Field identification & locations

Identified by its high refractive index (brilliance), extreme hardness (cannot be scratched by any other material), and thermal conductivity. Commonly found in kimberlite pipes or alluvial deposits.