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 trigonal crystal structure. The rounded surface indicates tumbling or natural water wear.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins, igneous rocks, and metamorphic environments when silica-rich fluids crystallize; specimens may range from Precambrian to recent geological ages. The image appears to show a polished/tumbled piece, possibly with minor iron-oxide staining or inclusions.

Uses & applications

Used for lapidary pieces, carvings, décor, metaphysical products, and occasionally as a silica source; opaque milky material has little jewelry value compared with clear quartz.

Geological facts

Milky appearance results from microscopic fluid inclusions, fractures, or scattered light. Quartz is one of Earth’s most abundant and chemically durable minerals.

Field identification & locations

Identify by its glassy/waxy white appearance, lack of cleavage, and ability to scratch ordinary glass; it should not fizz in dilute acid. Common worldwide, especially in quartz veins and pegmatites.