mineral

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale); Color: White to opaque; Luster: Vitreous to waxy (tumbled); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: White to opaque
Luster: Vitreous to waxy (tumbled)

Identified April 25, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: White to opaque; Luster: Vitreous to waxy (tumbled); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed from the crystallization of silica-rich hydrothermal solutions or cooling magma. Milky quartz gets its appearance from tiny fluid inclusions encapsulated during crystal growth. Found in various geological settings from igneous pegmatites to sedimentary veins.

Uses & applications

Used widely in glass making, electronics (piezoelectric properties), abrasives, landscaping, and commonly as a semi-precious gemstone in jewelry or pocket stones for metaphysical practices.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Historically, it was used by many ancient cultures for tool making and as talismans due to its durability and abundance.

Field identification & locations

Identify in the field by its hardness (will scratch glass and steel), lack of cleavage, and white streaky appearance. It is found globally, particularly in environments with volcanic activity or metamorphic terrain.