mineral

Tumbled milky quartz with dark inclusions

Quartz, SiO₂; inclusions appear to be dark accessory minerals, possibly biotite or tourmaline

AI-generated identification · may be incorrect

Mohs hardness 7; cloudy white to beige with dark streaks, vitreous to dull luster, and a hexagonal crystal structure. The rounded shape is from tumbling; the image does not show enough detail to identify the inclusions confidently.

Identified October 2, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins and pegmatites, or occurs in many rock types. Its age and precise geological source cannot be determined from the photograph.

Uses & applications

Tumbled quartz is used for collecting, decoration, and low-cost jewelry or craft pieces; quartz also has major industrial uses in glass and electronics.

Geological facts

Quartz is one of Earth’s most abundant minerals and has no cleavage, breaking instead with a conchoidal fracture.

Field identification & locations

Look for hardness near 7, glassy luster, and irregular fracture; dark inclusions may help distinguish this piece from plain milky quartz. Quartz occurs worldwide, including in veins and pegmatites.