gemstone
Diamond
C (Carbon)
Hardness: 10 (Mohs), Color: Clear/Colorless, Luster: Adamantine, Crystal Structure: Cubic, Specific Gravity: 3.52
- Luster
- Adamantine, Crystal Structure: Cubic, Specific Gravity: 3
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Physical properties
Hardness: 10 (Mohs), Color: Clear/Colorless, Luster: Adamantine, Crystal Structure: Cubic, Specific Gravity: 3.52
Formation & geological history
Formed under high-pressure, high-temperature conditions in Earth's mantle, approximately 100 miles underground, and brought to the surface by kimberlite eruptions.
Uses & applications
Primarily used in high-end jewelry and industrial applications for cutting, drilling, and grinding due to its extreme hardness.
Geological facts
Diamonds are the hardest known natural material on Earth and can be over 3 billion years old.
Field identification & locations
Identify by its brilliance, hardness, and thermal conductivity; commonly found in kimberlite pipes or alluvial deposits.
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Other gemstone specimens
Cubic Zirconia (simulant) or Diamond
ZrO2 (Cubic Zirconia) or C (Diamond)
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Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Cubic Zirconia (or possibly Diamond)
Zirconium dioxide (or Carbon)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
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Milky Quartz
Silicon Dioxide (SiO2)
mineral