mineral
Quartz (Clear or Rose Quartz)
Silicon Dioxide (SiO2)
Mohs hardness of 7; vitreous to greasy luster; hexagonal crystal system; conchoidal fracture; no cleavage; translucent to transparent with faint pink or clear white color; specific gravity ~2.65.
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Physical properties
Mohs hardness of 7; vitreous to greasy luster; hexagonal crystal system; conchoidal fracture; no cleavage; translucent to transparent with faint pink or clear white color; specific gravity ~2.65.
Formation & geological history
Forms through crystallization of silica-rich magma in igneous pegmatites, hydrothermal veins, or metamorphic environments across various geological ages.
Uses & applications
Widely used in electronics (piezoelectric oscillators), glassmaking, optical instruments, lapidary arts, jewelry, and crystal healing collections.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Pure quartz is colorless, but micro-inclusions of titanium, iron, or manganese give rose quartz its soft pink hue.
Field identification & locations
Identified in the field by its hardness (scratches glass readily, cannot be scratched by a steel nail), lack of cleavage, and characteristic glassy conchoidal fracture. Found worldwide in places like Brazil, Madagascar, and the USA.
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Septarian Pebble
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Sandstone with Mineral Veining or Crust
Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)
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Potassium Feldspar (Orthoclase)
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Gypsum (variety Selenite or Alabaster)
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