gemstone
Diamond (set in a eternity ring band)
Carbon (C)
Hardness: 10 on Mohs scale; Color: Colorless to white; Luster: Adamantine; Crystal System: Isometric-hexoctahedral; Cleavage: Perfect octahedral {111}; Specific Gravity: 3.52
- Hardness
- 10 on Mohs scale
- Color
- Colorless to white
- Luster
- Adamantine
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Physical properties
Hardness: 10 on Mohs scale; Color: Colorless to white; Luster: Adamantine; Crystal System: Isometric-hexoctahedral; Cleavage: Perfect octahedral {111}; Specific Gravity: 3.52
Formation & geological history
Formed under extreme temperatures and pressures deep in Earth's mantle (140-190 km) over billions of years, brought to the surface by kimberlite volcanic eruptions.
Uses & applications
Fine jewelry, engagement and wedding bands, industrial cutting, grinding, and drilling tools.
Geological facts
Diamond is the hardest naturally occurring substance on Earth. It is composed of pure carbon arranged in a dense crystal structure.
Field identification & locations
Identified by extreme hardness, brilliance, dispersion, and thermal conductivity. Frequently set in precious metals like gold or platinum in jewelry settings.
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Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
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Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Cubic Zirconia (simulant) or Diamond
ZrO2 (Cubic Zirconia) or C (Diamond)
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Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Cubic Zirconia (or possibly Diamond)
Zirconium dioxide (or Carbon)
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Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
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