mineral

Natural Diamond (Faceted)

Diamond (pure carbon crystal, C)

Hardness: 10 (Mohs scale), Color: Near-colorless/slight yellow tint, Luster: Adamantine, Crystal Structure: Cubic/Isometric, Cleavage: Perfect octahedral

Identified May 30, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale), Color: Near-colorless/slight yellow tint, Luster: Adamantine, Crystal Structure: Cubic/Isometric, Cleavage: Perfect octahedral

Formation & geological history

Formed deep in the Earth's mantle under extreme pressure and high temperatures, then transported to the surface by kimberlite magma eruptions billions of years ago.

Uses & applications

Primarily used in jewelry (rings, earrings) due to brilliance and durability; industrial-grade diamonds are used for cutting, grinding, and drilling tools.

Geological facts

Diamonds are the hardest known natural substance. The specific brilliant cut seen here is designed to maximize light reflection through total internal reflection.

Field identification & locations

Identify in the field by high thermal conductivity and refractive index; common in kimberlite pipes or alluvial deposits in regions like South Africa, Russia, and Canada.

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