mineral

Tumbled milky quartz

Quartz (SiO₂), likely massive milky quartz

AI-generated identification · may be incorrect

Opaque to translucent white with a vitreous-to-waxy polish; hardness 7 Mohs, trigonal crystal structure, no cleavage, and conchoidal fracture. The rounded shape indicates tumbling and polishing.

Identified October 8, 2026More mineral →

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Physical properties

Opaque to translucent white with a vitreous-to-waxy polish; hardness 7 Mohs, trigonal crystal structure, no cleavage, and conchoidal fracture. The rounded shape indicates tumbling and polishing.

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins and pegmatites, or occurs in many igneous and metamorphic rocks. Its geological age cannot be determined from the image.

Uses & applications

Used for inexpensive jewelry, ornaments, and collections; quartz is also important in glassmaking and electronics, though this specimen is primarily decorative.

Geological facts

Milky appearance results from microscopic fluid or gas inclusions that scatter light. Quartz is one of Earth’s most abundant minerals.

Field identification & locations

A hard, glassy feel, lack of cleavage, and conchoidal fracture help distinguish quartz; common worldwide in veins and silica-rich rocks. This appears to be a small polished/tumbled piece.