mineral

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Typically white to translucent with a vitreous-to-waxy luster, uneven fracture, and no cleavage; Mohs hardness 7, specific gravity about 2.65. The rounded shape suggests a naturally worn or tumbled fragment.

Identified August 20, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize in veins, cavities, and igneous or metamorphic rocks; quartz is common from Precambrian to modern geological settings. The exact age cannot be determined from the photograph.

Uses & applications

Used in glass, ceramics, electronics, abrasives, and engineered stone; attractive translucent pieces are sold as inexpensive specimens or craft stones.

Geological facts

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

Field identification & locations

Identify by its glassy luster, lack of cleavage, and ability to scratch ordinary glass; a steel nail should not scratch it. Common worldwide, especially in quartz veins, granites, pegmatites, and metamorphic terrains.