mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, typically translucent to opaque with a waxy to vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically translucent to opaque with a waxy to vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
Formation & geological history
Formed in various geological environments including igneous, metamorphic, and sedimentary rocks. Often found in hydrothermal veins and pegmatites, with ages ranging from millions to billions of years.
Uses & applications
Widely used in jewelry, as tumbled decorative stones, in lapidary arts, and various industrial applications such as glassmaking and electronics.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electric charge in response to applied mechanical stress.
Field identification & locations
Easily identified by its high hardness (scratches glass) and conchoidal fracture. Found worldwide in beach sands, river gravels, and rock formations.
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