gemstone

Diamond (in Ring Setting)

Diamond (C)

Hardness: 10 on Mohs scale; Color: Colorless to near-colorless; Luster: Adamantine; Crystal Structure: Isometric-Hexoctahedral; Cleavage: Perfect octahedral (4 directions); Specific Gravity: 3.52

Hardness: 10 on Mohs scale
Color: Colorless to near-colorless
Luster: Adamantine

Identified July 23, 2026More gemstone →

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Physical properties

Hardness: 10 on Mohs scale; Color: Colorless to near-colorless; Luster: Adamantine; Crystal Structure: Isometric-Hexoctahedral; Cleavage: Perfect octahedral (4 directions); Specific Gravity: 3.52

Formation & geological history

Formed under conditions of high temperature and pressure at depths of 140 to 190 kilometers in the Earth's mantle over billions of years, brought to the surface by deep-origin volcanic eruptions (kimberlites and lamproites).

Uses & applications

Widely used in high-end jewelry (rings, necklaces, earrings) as well as industrial applications such as cutting, grinding, and drilling tools.

Geological facts

Diamond is the hardest naturally occurring substance known on Earth and consists of pure carbon arranged in a diamond cubic crystal structure.

Field identification & locations

Identified by extreme hardness, adamantine luster, high refractive index, and high thermal conductivity. Primary mining regions include Russia, Botswana, Canada, Angola, and South Africa.