mineral

Diamond (Princess Cut Faceted Gemstone)

Native Carbon (C)

Hardness: 10 (Mohs scale), Color: Colorless (assuming D-F range based on photo), Luster: Adamantine, Crystal Structure: Cubic, Cleavage: Perfect octahedral, Specific Gravity: 3.52

Identified April 2, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale), Color: Colorless (assuming D-F range based on photo), Luster: Adamantine, Crystal Structure: Cubic, Cleavage: Perfect octahedral, Specific Gravity: 3.52

Formation & geological history

Formed at extremely high temperatures and pressures within Earth's mantle, approximately 100 miles below the surface, usually billions of years ago. Transported to the surface by deep-source volcanic eruptions called kimberlite pipes.

Uses & applications

Primarily used in high-end jewelry (engagement rings, earrings) and industrial applications for cutting, grinding, and drilling due to extreme hardness.

Geological facts

Diamonds are the hardest known natural substance. The specific 'princess cut' shown is a square modified brilliant cut that originated in the 1960s-1970s. Most natural diamonds are between 1 billion and 3.5 billion years old.

Field identification & locations

Identify in the field by its ability to scratch any other mineral, high refractive index (brilliance), and thermal conductivity. Commonly found in alluvial deposits or kimberlite pipes in Russia, Botswana, Canada, and South Africa.

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