Clear Quartz

Physical Properties

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glass-like); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Formation & Geological History

Formed from silica-rich hydrothermal fluids or within igneous pegmatites. It is one of the most abundant minerals in the Earth's crust, found in virtually all geological ages and environments.

Uses & Applications

Used widely in electronics (oscillators), watchmaking, glass manufacturing, abrasives, and as a gemstone for jewelry and metaphysical collecting.

Geological Facts

Quartz is piezoelectric, meaning it generates an electric charge in response to applied mechanical stress, which is why it is used in precision clocks and radios.

Field Identification & Locations

Identify in the field by its 6-sided hexagonal prism shape ending in a pyramid, its inability to be scratched by steel, and its lack of cleavage. Commonly found in mountain ranges like the Alps, Arkansas (USA), and Minas Gerais (Brazil).

Identified on: 4/18/2026

Mode: Standard