Quartz (Rose or Clear variety)

Physical Properties

Hardness: 7 on Mohs scale; Color: Pale pink to translucent white; Luster: Vitreous (glass-like); Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & Geological History

Commonly forms in igneous rocks like granite or in hydrothermal veins. It crystallizes from silica-rich magma or hot geothermal fluids. It is found in deposits ranging from millions to billions of years old.

Uses & Applications

Used in glass manufacturing, electronics (due to piezoelectric properties), gemstones for jewelry, and as a popular specimen for crystal collectors.

Geological Facts

Quartz is the second most abundant mineral in Earth's continental crust. Pure quartz is traditionally called rock crystal, while the pink hue in Rose Quartz is often caused by trace amounts of titanium, iron, or manganese.

Field Identification & Locations

Identify in the field by its ability to scratch glass, its lack of cleavage (it breaks in curved, shell-like fractures), and its vitreous luster. It is found globally, notably in Brazil, Madagascar, and the USA (Arkansas, South Dakota).

Identified on: 4/30/2026

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