mineral

Likely tumbled milky quartz

Quartz (SiO₂)

AI-generated identification · may be incorrect

Pale cream-white, opaque to slightly translucent, with a vitreous-to-waxy polish; Mohs hardness 7, trigonal crystal structure, no cleavage, and specific gravity about 2.65. The rounded shape and smooth finish suggest it has been tumbled.

Identified October 6, 2026More mineral →

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Physical properties

Formation & geological history

Quartz forms in many igneous, metamorphic, and hydrothermal settings as silica-rich fluids crystallize or rocks cool; its age cannot be determined from the photo. Tumbling is a human finishing process, not its geological formation.

Uses & applications

Commonly used for decorative pieces, jewelry, carvings, and as a durable collector stone; quartz is also important in glassmaking and electronics.

Geological facts

Quartz is one of Earth’s most abundant minerals and resists weathering, so it commonly occurs in sediments and stream gravels.

Field identification & locations

The pale, granular-looking surface is consistent with milky quartz, but the image is insufficient to rule out other pale minerals. Check for hardness and a glassy fracture; common sources include quartz veins and river deposits worldwide.