mineral

White Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on Mohs scale; Color: Milky white with yellowish iron staining; Luster: Vitreous (glassy) to greasy; Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Milky white with yellowish iron staining
Luster: Vitreous (glassy) to greasy

Identified March 25, 2026More mineral →

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Physical properties

Formation & geological history

Formed from silica-rich hydrothermal fluids or within igneous pegmatites. This specific specimen has been water-worn into a smooth pebble shape over thousands of years in a river, beach, or glacial environment.

Uses & applications

Used in glassmaking, electronics (piezoelectric properties), abrasives, and as decorative landscaping stone. Polished versions are used in costume jewelry and metaphysical collections.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Pure quartz is clear; the white 'milky' appearance is caused by tiny fluid inclusions of gas or liquid trapped during crystal growth.

Field identification & locations

Identify in the field by its ability to scratch glass and its lack of cleavage. It is extremely common worldwide, particularly in riverbeds and mountainous terrain. Collectors look for clarity or unique inclusions.