mineral

Diamond (Faceted Gemstone)

Native Carbon (C)

AI-generated identification · may be incorrect

Hardness: 10 Mohs scale. Color: Colorless (clear). Luster: Adamantine. Crystal structure: Cubic. Specific gravity: 3.52. Cleavage: Perfect octahedral.

Hardness: 10 Mohs scale
Color: Colorless (clear)
Luster: Adamantine

Identified May 30, 2026More mineral →

Explore Diamond (Faceted Gemstone) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 10 Mohs scale. Color: Colorless (clear). Luster: Adamantine. Crystal structure: Cubic. Specific gravity: 3.52. Cleavage: Perfect octahedral.

Formation & geological history

Formed under high-pressure, high-temperature conditions deep within the Earth's mantle, approximately 100 miles below the surface. They are brought to the surface via volcanic eruptions in kimberlite pipes. Most natural diamonds are 1 to 3.5 billion years old.

Uses & applications

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

Geological facts

Diamond is the hardest known natural substance. The name comes from the Greek 'adamas', meaning unbreakable. Most industrial diamonds are now produced synthetically in labs.

Field identification & locations

Identification in the field is difficult without lab equipment, but they are characterized by their ability to scratch any other material. Look for high brilliance and fire (rainbow light dispersion). Usually found in kimberlite pipes or alluvial deposits.