mineral

Yellow Diamond

Diamond (Carbon, C)

Hardness: 10 (Mohs scale); Color: Fancy Yellow/Canary; Luster: Adamantine; Crystal Structure: Isometric-Hexoctahedral; Cleavage: Perfect octahedral; Specific Gravity: 3.52

Hardness: 10 (Mohs scale)
Color: Fancy Yellow/Canary
Luster: Adamantine

Identified March 24, 2026More mineral →

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Physical properties

Hardness: 10 (Mohs scale); Color: Fancy Yellow/Canary; Luster: Adamantine; Crystal Structure: Isometric-Hexoctahedral; Cleavage: Perfect octahedral; Specific Gravity: 3.52

Formation & geological history

Formed under extreme pressure and temperature in the Earth's mantle (100+ miles deep) 1 to 3 billion years ago. Brought to the surface via kimberlite volcanic eruptions.

Uses & applications

Primarily used in high-end jewelry (engagement rings, necklaces) and for investment. Industrial-grade variants are used for cutting, grinding, and drilling tools.

Geological facts

Yellow diamonds get their color from nitrogen atoms replacing carbon in the crystal lattice. The 'Tiffany Yellow Diamond' is one of the most famous examples, weighing 128.54 carats.

Field identification & locations

Identified by its extreme hardness, high refractive index (brilliance), and 'fire.' Commonly found in kimberlite pipes or alluvial deposits in South Africa, Russia, Australia, and Canada.