mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Typically white to translucent with a vitreous-to-waxy luster; hardness 7 Mohs, no cleavage, conchoidal fracture, and hexagonal crystal structure. The rounded shape indicates human tumbling or natural abrasion.

Identified August 25, 2026More mineral →

Explore Tumbled milky quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize in igneous, metamorphic, or hydrothermal environments; milky appearance results from microscopic fluid inclusions or structural defects. Quartz is common from Precambrian to modern geological settings.

Uses & applications

Used as a decorative and lapidary stone, in carvings, countertops, abrasives, glass, ceramics, and electronics. This specimen has modest ornamental and collecting value.

Geological facts

Quartz is among Earth’s most abundant minerals and is piezoelectric, generating an electrical charge when mechanically stressed.

Field identification & locations

Identify by its glassy translucence, lack of cleavage, hardness sufficient to scratch ordinary glass, and conchoidal fracture; common worldwide, especially in granite pegmatites, veins, and metamorphic rocks.