mineral

Milky Quartz

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: white to off-white, opaque; Luster: vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: none (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: white to off-white, opaque
Luster: vitreous to greasy

Identified July 8, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: white to off-white, opaque; Luster: vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: none (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Forms in hydrothermal veins and pegmatites through the cooling of silica-rich solutions. This specimen appears water-worn, likely from a fluvial or glacial environment.

Uses & applications

Used in glass making, as an abrasive, in electronics for its piezoelectric properties, and commonly as decorative landscaping stone or for metaphysical collecting.

Geological facts

Milky quartz gets its white, cloudy appearance from tiny fluid inclusions of gas or liquid trapped during the crystal's growth. It is the most common variety of crystalline quartz.