gemstone
Clear Quartz (Faceted)
Silicon dioxide (SiO2)
Mohs hardness 7, colorless and transparent, vitreous luster, trigonal crystal system normally, but this specimen has been artificially faceted.
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Physical properties
Mohs hardness 7, colorless and transparent, vitreous luster, trigonal crystal system normally, but this specimen has been artificially faceted.
Formation & geological history
Forms in igneous rocks like pegmatites or in hydrothermal veins when silica-rich solutions cool and crystallize.
Uses & applications
Used in jewelry, decorative objects, optical equipment, oscillators, and for making glass and abrasive materials.
Geological facts
Clear quartz is one of the most abundant minerals in the Earth's continental crust. Historically, it was believed to be deeply frozen ice.
Field identification & locations
Identified by its hardness (scratches glass), conchoidal fracture (though obscured here by faceting), and lack of cleavage. Found worldwide.
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Red Jasper
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Faceted Gemstone
Unknown transparent mineral, possibly Diamond (C), Cubic Zirconia (ZrO2), Quartz (SiO2), or Glass
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