mineral

Diamond

Carbon (C)

AI-generated identification · may be incorrect

Hardness: 10 (Mohs scale), Color: Colorless to faint yellow/brown, Luster: Adamant, Crystal Structure: Isometric-hexoctahedral (cubic), Specific Gravity: 3.52

Identified July 10, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale), Color: Colorless to faint yellow/brown, Luster: Adamant, Crystal Structure: Isometric-hexoctahedral (cubic), Specific Gravity: 3.52

Formation & geological history

Formed under high pressure and temperature conditions in the Earth's mantle, approximately 150 to 250 kilometers deep, and brought to the surface by kimberlite and lamproite pipes.

Uses & applications

Widely used for jewelry as gemstones and in industrial applications for cutting, drilling, and grinding due to its extreme hardness.

Geological facts

Diamond is the hardest naturally occurring substance on Earth. Most natural diamonds were formed between 1 billion and 3.5 billion years ago.

Field identification & locations

Identified by its high refractive index, extreme hardness (it can scratch all other minerals), and octahedral crystal habit. Commonly found in primary deposits (volcanic pipes) or secondary alluvial deposits.