mineral

Milky Quartz

Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale), Color: White to translucent white, Luster: Vitreous to greasy, Crystal Structure: Trigonal (hexagonal prisms), Cleavage: None (conchoidal fracture), Specific Gravity: 2.65

Identified May 9, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale), Color: White to translucent white, Luster: Vitreous to greasy, Crystal Structure: Trigonal (hexagonal prisms), Cleavage: None (conchoidal fracture), Specific Gravity: 2.65

Formation & geological history

Formed from the crystallization of silica-rich hydrothermal fluids in veins or within cooling magma bodies; it is one of the most common minerals in Earth's crust across all geological ages.

Uses & applications

Used as a decorative gemstone, in the manufacturing of glass and ceramics, as an abrasive, and frequently by mineral collectors and spiritual healers.

Geological facts

The milky white color is caused by tiny inclusions of gas or liquid trapped during the crystal's growth. It is the most common variety of crystalline quartz found on Earth.

Field identification & locations

Identify by its hardness (scratches glass), white color, and lacks cleavage. Commonly found in riverbeds, mountains, and near volcanic regions worldwide. Collectors should look for unique shapes or associations with other minerals.