gemstone
Diamond
Carbon (C)
AI-generated identification · may be incorrectMohs hardness 10; transparent to opaque; adamantine luster; isometric crystal system; perfect octahedral cleavage.
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Physical properties
Mohs hardness 10; transparent to opaque; adamantine luster; isometric crystal system; perfect octahedral cleavage.
Formation & geological history
Formed under extreme heat and pressure in Earth's mantle, transported to the surface via kimberlite or lamproite pipes.
Uses & applications
Used primarily in fine jewelry and various industrial cutting, grinding, and drilling tools due to extreme hardness.
Geological facts
Diamond is the hardest naturally occurring substance on Earth and forms deep underground over billions of years.
Field identification & locations
Identified by extreme hardness, high refractive index, and adamantine luster; found globally in alluvial deposits and primary pipe mines.
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