mineral

Diamond (Faceted)

Carbon (C)

Hardness: 10 (Mohs scale); Color: Clear/Colorless; Luster: Adamantine; Crystal Structure: Isometric-hexoctahedral; Cleavage: Perfect in four directions; Specific Gravity: 3.52

Hardness: 10 (Mohs scale)
Color: Clear/Colorless
Luster: Adamantine

Identified May 30, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale); Color: Clear/Colorless; Luster: Adamantine; Crystal Structure: Isometric-hexoctahedral; Cleavage: Perfect in four directions; Specific Gravity: 3.52

Formation & geological history

Formed under high-pressure, high-temperature conditions deep within the Earth's mantle, approximately 100 miles underground. Transported to the surface by deep-origin volcanic eruptions (kimberlite pipes). Geological age ranges from 1 to 3.5 billion years.

Uses & applications

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

Geological facts

Diamond is the hardest naturally occurring substance on Earth and is composed of pure carbon atoms arranged in a stable lattice. The word 'diamond' comes from the Greek word 'adamas', meaning invincible.

Field identification & locations

Identify by its brilliance, dispersion (fire), and inability to be scratched by any other material. Commonly found in South Africa, Russia, Canada, and Australia. Collectors look for the 'Four Cs': Cut, Color, Clarity, and Carat weight.