Diamond (in jewelry)

Physical Properties

Hardness: 10 (Mohs scale), Color: Colorless (as seen), Luster: Adamantine, Crystal Structure: Isometric (cubic), Cleavage: Perfect octahedral, Specific Gravity: 3.52

Formation & Geological History

Formed deep within the Earth's mantle under extreme pressure and high temperatures, brought to the surface by volcanic eruptions in kimberlite pipes.

Uses & Applications

Primary use in fine jewelry and high-end gemstone collections. Industrial diamonds are used for cutting, grinding, and drilling tools due to extreme hardness.

Geological Facts

Diamonds are the hardest known natural substance. The butterfly shape shown here is a common motif in contemporary pavé jewelry settings.

Field Identification & Locations

Identify in the field by checking for extreme hardness and dispersion (fire). Found in primary deposits like kimberlite or secondary alluvial deposits in riverbeds.

Identified on: 5/11/2026

Mode: Standard