mineral
Diamond
Diamond (C)
Hardness: 10 (Mohs scale), Color: Colorless to faint yellow/brown most common, Luster: Adamantine, Crystal Structure: Isometric-hexoctahedral (cubic), Cleavage: Perfect in four directions, Specific Gravity: 3.5-3.53
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Physical properties
Hardness: 10 (Mohs scale), Color: Colorless to faint yellow/brown most common, Luster: Adamantine, Crystal Structure: Isometric-hexoctahedral (cubic), Cleavage: Perfect in four directions, Specific Gravity: 3.5-3.53
Formation & geological history
Formed under extreme pressure and high temperature at depths of 140 to 190 kilometers in the Earth's mantle. Delivered to the surface through deep-source volcanic eruptions called kimberlite pipes.
Uses & applications
Predominantly used in jewelry as gemstones. Industrial uses include cutting, drilling, grinding, and polishing tools due to its extreme hardness.
Geological facts
Diamonds are the hardest known natural material. Most natural diamonds have ages between 1 billion and 3.5 billion years.
Field identification & locations
Identify by its brilliance, extreme hardness (scratches all other minerals), and high thermal conductivity. Commonly found in alluvial deposits or within kimberlite and lamproite pipes.
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Mineral/Rock
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Metamorphic Rock
![Biotite Schist (Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]) — metamorphic](https://media.rock.id/9ca564b5-bc87-402b-965a-69b21f9aa6bf-thumbnail.jpg)
Biotite Schist
Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]
metamorphic