mineral

Diamond (in a jewelry setting)

Cubic Carbon (C)

Hardness: 10 (Mohs scale), Color: Clear/White (though appearing pink due to lighting), Luster: Adamantine, Crystal Structure: Cubic, Specific Gravity: 3.52

Luster: Adamantine, Crystal Structure: Cubic, Specific Gravity: 3

Identified April 16, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale), Color: Clear/White (though appearing pink due to lighting), Luster: Adamantine, Crystal Structure: Cubic, Specific Gravity: 3.52

Formation & geological history

Formed at high temperatures and pressures within the Earth's mantle (100 miles deep) and brought to the surface by kimberlite eruptions.

Uses & applications

Used primarily in fine jewelry (rings) and industrially as an abrasive for cutting and drilling due to extreme hardness.

Geological facts

Diamonds are the hardest known natural substance. The oldest diamonds are thought to be around 3.3 billion years old.

Field identification & locations

Identify in the field by its ability to scratch any other material and its high refractive index (brilliance/fire). This specimen is set in a metal band, likely gold or platinum.