Diamond (in Jewelry Setting)

Physical Properties

Hardness: 10 (Mohs scale), Color: Colorless/Yellow, Luster: Adamantine, Crystal Structure: Cubic/Isometric, Cleavage: Octahedral (perfect), Specific Gravity: 3.52

Formation & Geological History

Formed under extreme high-pressure and high-temperature conditions in the Earth's mantle, approximately 100 miles below the surface, and brought to the surface through volcanic pipes called Kimberlites.

Uses & Applications

Primary use in high-end jewelry (rings, earrings, necklaces) and industrial applications such as cutting, grinding, and drilling due to extreme hardness.

Geological Facts

Diamonds are the hardest known natural material on Earth. Most natural diamonds are between 1 billion and 3.5 billion years old.

Field Identification & Locations

Identification in the field usually occurs in kimberlite pipes or alluvial deposits. Identification involves testing for high thermal conductivity and extreme hardness that can scratch any other mineral.

Identified on: 4/25/2026

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