mineral

White Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Hardness of 7 on the Mohs scale, white to colorless, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.

Identified July 30, 2026More mineral →

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Physical properties

Hardness of 7 on the Mohs scale, white to colorless, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.

Formation & geological history

Forms in hydrothermal veins, pegmatites, and as a secondary mineral in sedimentary environments. Can form over millions of years as silica-rich water cools or evaporates.

Uses & applications

Used in electronics, watchmaking, glass manufacturing, ornamental items, and crystal collecting.

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 electrical charge under mechanical stress.

Field identification & locations

Easily identified by its hardness (scratches glass), lack of cleavage, and characteristic hexagonal crystal habit. Found worldwide, with major deposits in Brazil, the USA, and Madagascar.