Diamond (in Jewelry)

Physical Properties

Hardness: 10 (Mohs scale); Color: Clear/Colorless (in this specific piece); Luster: Adamantine; Crystal Structure: Isometric-Hexoctahedral; Specific Gravity: 3.52.

Formation & Geological History

Formed under high-pressure, high-temperature conditions in Earth's mantle, approximately 100 miles below the surface, and brought to the exterior by deep-source volcanic eruptions called kimberlite pipes.

Uses & Applications

Primarily used in high-end jewelry (as seen in this pendant) and for industrial cutting, grinding, and drilling due to extreme hardness.

Geological Facts

Diamonds are the only gemstone made of a single element: Carbon. Most natural diamonds are between 1 billion and 3.5 billion years old.

Field Identification & Locations

Identify by its brilliance, dispersion (fire), and inability to be scratched by any other material. In the field, look for octahedral shapes in kimberlite or alluvial deposits.

Identified on: 4/23/2026

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