gemstone
Diamond
C
Hardness: 10, Color: Colorless to various shades, Luster: Adamantine, Crystal structure: Isometric, Cleavage: Octahedral, Specific gravity: 3.52
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Physical properties
Hardness: 10, Color: Colorless to various shades, Luster: Adamantine, Crystal structure: Isometric, Cleavage: Octahedral, Specific gravity: 3.52
Formation & geological history
Formed under high temperature and pressure in the Earth's mantle; brought to the surface by deep-source volcanic eruptions.
Uses & applications
Predominantly used in jewelry; industrial applications include cutting, grinding, and drilling tools due to extreme hardness.
Geological facts
Diamond is the hardest known natural material. Only a diamond can scratch another diamond.
Field identification & locations
Identified by extreme hardness, adamantine luster, and high thermal conductivity. Commonly found in kimberlite pipes and alluvial deposits.
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Cubic Zirconia (or possibly Diamond)
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