Clear Quartz

Physical Properties

Hardness: 7 on Mohs scale. Color: Colorless to transparent. Luster: Vitreous (glassy). Crystal Structure: Hexagonal/Trigonal. Cleavage: Indistinct/Conchoidal fracture. Specific Gravity: 2.65.

Formation & Geological History

Formed through the cooling and crystallization of silica-rich molten rock (magma) or from hydrothermal veins. It is found in igneous, metamorphic, and sedimentary environments worldwide across all geological ages.

Uses & Applications

Used in electronics (oscillators), optics (glass making), jewelry (gemstones), abrasives, and as a popular decorative collector's item.

Geological Facts

Quartz is one of the most abundant minerals in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge when mechanical pressure is applied, which is why it is used in watches.

Field Identification & Locations

Identify in the field by its hardness (scratches glass), lack of cleavage, and conchoidal (shell-like) fracture. Found globally, especially in mountainous regions or inside geodes and pegmatites.

Identified on: 5/10/2026

Mode: Standard