mineral

Diamond

Natural Diamond (Carbon, C)

Hardness: 10 Mohs; Color: Colorless to faint yellow/brown; Luster: Adamant; Crystal Structure: Isometric-hexoctahedral; Specific Gravity: 3.51-3.53

Hardness: 10 Mohs
Color: Colorless to faint yellow/brown
Luster: Adamant

Identified May 27, 2026More mineral →

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Physical properties

Hardness: 10 Mohs; Color: Colorless to faint yellow/brown; Luster: Adamant; Crystal Structure: Isometric-hexoctahedral; Specific Gravity: 3.51-3.53

Formation & geological history

Formed under high-pressure, high-temperature conditions in the Earth's mantle, typically at depths of 150-200 kilometers, and brought to the surface via kimberlite or lamproite volcanic eruptions.

Uses & applications

Primarily used in high-end jewelry and as an industrial abrasive for cutting, drilling, and grinding due to its extreme hardness.

Geological facts

Diamond is the hardest known natural substance. The name is derived from the Greek word 'adamas', meaning invincible or unbreakable.

Field identification & locations

Identify by testing for thermal conductivity and hardness (it scratches all other materials). Found in kimberlite pipes or alluvial deposits in regions like South Africa, Russia, and Canada.