mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Hardness: 7 on the Mohs scale. Color: Cloudy white due to microscopic fluid inclusions. Luster: Vitreous to greasy. Crystal structure: Trigonal/Hexagonal. Cleavage: None (conchoidal fracture). Specific gravity: 2.65.

Hardness: 7 on the Mohs scale
Color: Cloudy white due to microscopic fluid inclusions
Luster: Vitreous to greasy

Identified April 11, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the cooling of silica-rich magma or from hydrothermal veins. The milky appearance is caused by tiny bubbles of gas and/or liquid trapped during the crystal's growth over millions of years.

Uses & applications

Commonly used as a decorative stone in landscaping, as a source for silicon in electronics, for glass making, and as tumbled stones for healing or collecting.

Geological facts

Milky quartz is the most common variety of crystalline quartz. It is often found in massive form rather than distinct crystals. In many cultures, it is associated with clarity and purity.

Field identification & locations

Identify in the field by its hardness (it can scratch glass), white color, and uneven fracture. It is ubiquitous worldwide, especially in mountain ranges and riverbeds where it erodes from vein quartz.