mineral

Quartz (Raw Crystal)

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale. Varies in color from colorless to white, gray, brown, or yellow. Exhibits a vitreous (glass-like) luster. Crystal system is trigonal, typically forming six-sided prisms. Conchoidal fracture with no true cleavage.

Identified August 7, 2026More mineral →

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Physical properties

Formation & geological history

Forms in a wide variety of geological environments, including igneous, metamorphic, and sedimentary rocks. Often crystallizes from silica-rich hydrothermal veins and pegmatites over millions of years.

Uses & applications

Widely used in electronics (oscillators), manufacturing of glass, ceramics, abrasives, and as gemstones or ornamental mineral specimens.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust, surpassed only by feldspar. It exhibits piezoelectric properties, meaning it can generate an electric charge under mechanical stress.

Field identification & locations

Easily identified by its high hardness (scratches glass), lack of cleavage, and characteristic conchoidal fracture. Found globally in almost every rock type, especially in pegmatites, quartz veins, and sandstones.