mineral
Polished Red Quartz (or Carnelian / Red Jasper)
Silicon Dioxide (SiO2)
Hardness 7 on Mohs scale; reddish-pink to brownish-red color; vitreous to waxy luster; trigonal crystal system; Conchoidal fracture; specific gravity approximately 2.65.
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Physical properties
Hardness 7 on Mohs scale; reddish-pink to brownish-red color; vitreous to waxy luster; trigonal crystal system; Conchoidal fracture; specific gravity approximately 2.65.
Formation & geological history
Formed in hydrothermal veins, volcanic cavities, or low-grade metamorphic environments through silica precipitation from fluids.
Uses & applications
Popular for lapidary work, tumbled stones, jewelry beads, metaphysical uses, and decorative crystal collections.
Geological facts
Red coloration in quartz materials is typically caused by fine inclusions of hematite or other iron oxides during formation.
Field identification & locations
Identify by hardness (scratches glass readily), smooth tumbled texture, waxy to glassy luster, and warm reddish coloration. Commonly found in Brazil, Madagascar, India, and North America.
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