mineral

White Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on the Mohs scale; Color: Milky white to translucent; Luster: Vitreous (glassy) to waxy when water-worn; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65.

Hardness: 7 on the Mohs scale
Color: Milky white to translucent
Luster: Vitreous (glassy) to waxy when water-worn

Identified March 7, 2026More mineral →

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Physical properties

Formation & geological history

Formed from silica-rich hydrothermal fluids or within igneous pegmatites. This specific specimen is a water-worn river pebble, shaped by mechanical erosion over thousands to millions of years in a high-energy aquatic environment.

Uses & applications

Used in the production of glass, ceramics, and abrasives. Tumbled stones are used for decorative landscaping, jewelry, and as 'worry stones' in the metaphysical market.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge in response to applied mechanical stress, which is why it is used in watches and electronics.

Field identification & locations

Identify in the field by its ability to scratch glass and its lack of cleavage. It is commonly found in riverbeds, beaches, and glacial till worldwide. Collectors should look for unique inclusions or iron staining (the yellow/brown spots seen on this specimen).