Quartz (specifically Clear and Rose Quartz)

Physical Properties

Hardness: 7 (Mohs scale); Color: Clear to pale pink; Luster: Vitreous (glassy); Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Formation & Geological History

Formed through the crystallization of silica-rich magma or from hydrothermal veins. It is found in all types of geological environments and can be billions of years old.

Uses & Applications

Used in electronics (oscillators), glassmaking, abrasives, jewelry (lapidary), and as healing crystals in alternative medicine.

Geological Facts

Quartz is the second most abundant mineral in Earth's continental crust. Rose quartz gets its color from microscopic inclusions of flattened fibers of a borosilicate mineral.

Field Identification & Locations

Identify by its ability to scratch glass and lack of cleavage. Commonly found in pegmatites, hydrothermal veins, and as grains in sandstone. Look for conchoidal (shell-like) fractures on broken surfaces.

Identified on: 4/30/2026

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