mineral

Quartz (Milky/Rose Quartz)

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Off-white to pale pink/tan; Luster: Vitreous to greasy; Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Off-white to pale pink/tan
Luster: Vitreous to greasy

Identified July 22, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Off-white to pale pink/tan; Luster: Vitreous to greasy; Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Formation & geological history

Forms in hydrothermal veins, pegmatites, and igneous rocks through the cooling and precipitation of silica-rich fluids.

Uses & applications

Widely used in jewelry, decorative carvings, landscaping, glassmaking, electronics (piezoelectric properties), and lapidary art.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Its name comes from the German word 'Quarz' which is of Slavic origin.

Field identification & locations

Identified by its scratch hardness (can scratch glass), lack of cleavage, and translucent milky appearance. Commonly found worldwide in stream beds, gravels, and igneous rock formations.