mineral

Diamond (in jewelry setting)

Diamond (C - Pure Carbon)

AI-generated identification · may be incorrect

Hardness: 10 (Mohs scale), Color: Colorless/transparent, Luster: Adamantine, Crystal Structure: Isometric-hexoctahedral, Cleavage: Octahedral, Specific Gravity: 3.52

Identified June 10, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale), Color: Colorless/transparent, Luster: Adamantine, Crystal Structure: Isometric-hexoctahedral, Cleavage: Octahedral, Specific Gravity: 3.52

Formation & geological history

Formed under high-pressure, high-temperature conditions in the Earth's lithospheric mantle, typically 150-200km deep. Transported to the surface by kimberlite or lamproite volcanic eruptions.

Uses & applications

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

Geological facts

Diamonds are the hardest known natural substance. The oldest diamonds are estimated to be over 3 billion years old. Famous specimens include the Hope Diamond and the Cullinan diamond.

Field identification & locations

Identify by extreme hardness (scratches all other minerals), high refractive index (brilliance), and thermal conductivity. Commonly found in kimberlite pipes or alluvial deposits in locations like South Africa, Russia, and Canada.