mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Hardness of 7 on the Mohs scale, yellow to golden-brown color, vitreous luster, trigonal crystal system, conchoidal fracture, no true cleavage, specific gravity of 2.65

Identified July 31, 2026More mineral →

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Physical properties

Hardness of 7 on the Mohs scale, yellow to golden-brown color, vitreous luster, trigonal crystal system, conchoidal fracture, no true cleavage, specific gravity of 2.65

Formation & geological history

Forms in hydrothermal veins, pegmatites, and sedimentary environments through the precipitation of silica-rich solutions over millions of years

Uses & applications

Used in jewelry, decorative carvings, metaphysical collections, and lapidary arts

Geological facts

Quartz is one of the most abundant minerals on Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress

Field identification & locations

Easily identified by its hardness (scratches glass), lack of cleavage, and conchoidal fracture; commonly found in river gravels, pegmatites, and quartz veins worldwide