Quartz / Clear Quartz

Physical Properties

Hardness: 7 on the Mohs scale. Color: Colorless to white. Luster: Vitreous (glassy). Crystal Structure: Hexagonal (Trigonal). Cleavage: None, exhibits conchoidal fracture. Specific Gravity: 2.65.

Formation & Geological History

Formed through the crystallization of molten magma or from hydrothermal veins. It is found in all types of geological environments (igneous, metamorphic, and sedimentary) and can be billions of years old.

Uses & Applications

Used in electronics (oscillators), glass manufacturing, abrasives, timepieces, and widely used in jewelry and metaphysical collections.

Geological Facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge when mechanical stress is applied.

Field Identification & Locations

Identify by its hardness (it scratches glass), hexagonal crystal habit, and lack of cleavage. Found globally, especially in mountain ranges like the Alps or the Arkansas Ouachita Mountains.

Identified on: 4/16/2026

Mode: Standard