mineral

Milky Quartz

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: White to cloudy translucent; Luster: Vitreous to greasy; Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Hardness: 7 (Mohs scale)
Color: White to cloudy translucent
Luster: Vitreous to greasy

Identified July 6, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: White to cloudy translucent; Luster: Vitreous to greasy; Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Formation & geological history

Formed through the cooling of silica-rich magma or from hydrothermal veins. The cloudy appearance is caused by tiny inclusions of gas or liquid trapped during crystal growth.

Uses & applications

Used in glassmaking, abrasives, jewelry (as cabochons or carvings), and as a gemstone for collectors or metaphysical purposes.

Geological facts

Milky quartz is the most common variety of crystalline quartz. It is often found in the same veins as gold and other valuable minerals.

Field identification & locations

Identify in the field by its hardness (scratches glass), lack of cleavage, and typical milky-white appearance. Often found in quartz veins and as pebbles in riverbeds.