mineral

Diamond (Cut Gemstone)

Carbon (C)

Hardness: 10 (Mohs scale), Color: Colorless/White (shown), Luster: Adamantine, Crystal Structure: Isometric-Hexoctahedral, Cleavage: 4 directions (perfect octahedron), Specific Gravity: 3.51

Identified June 9, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale), Color: Colorless/White (shown), Luster: Adamantine, Crystal Structure: Isometric-Hexoctahedral, Cleavage: 4 directions (perfect octahedron), Specific Gravity: 3.51

Formation & geological history

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

Uses & applications

Primarily used in high-end jewelry (engagement rings, necklaces) and for industrial cutting, grinding, and drilling due to its extreme hardness.

Geological facts

Diamonds are the hardest known natural material on Earth and are composed of pure carbon arranged in a highly stable crystal lattice.

Field identification & locations

Identified by its high brilliance, fire (dispersion), and ability to scratch any other material. For cut stones, look for sharp facet edges and high refractive index.