gemstone
Faceted Quartz or Cubic Zirconia
SiO2 (Quartz) or ZrO2 (Cubic Zirconia)
Clear, faceted, high dispersion (if CZ), hardness 7 (Quartz) or 8-8.5 (CZ), vitreous to adamantine luster.
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Physical properties
Clear, faceted, high dispersion (if CZ), hardness 7 (Quartz) or 8-8.5 (CZ), vitreous to adamantine luster.
Formation & geological history
Natural or synthetic formation; quartz forms in igneous to hydrothermal environments, while cubic zirconia is typically synthesized in a laboratory.
Uses & applications
Used primarily in jewelry as a gemstone or diamond simulant.
Geological facts
Faceted gems are cut to maximize light return and brilliance.
Field identification & locations
Identified by refractive index, hardness, and inclusion patterns. Common in jewelry markets.
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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)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Cubic Zirconia (or possibly Diamond)
Zirconium dioxide (or Carbon)
gemstone
Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
gemstone