mineral
Milky quartz pebble
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectHardness 7 Mohs; pale white to translucent, vitreous to waxy luster, hexagonal crystal structure, and no cleavage. The specimen appears water-worn and rounded; its exact identity cannot be confirmed from the photo alone.
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Physical properties
Hardness 7 Mohs; pale white to translucent, vitreous to waxy luster, hexagonal crystal structure, and no cleavage. The specimen appears water-worn and rounded; its exact identity cannot be confirmed from the photo alone.
Formation & geological history
Quartz forms in many igneous, metamorphic, and hydrothermal settings; this pebble was likely rounded by transport in water. Quartz is widespread in rocks of many geological ages.
Uses & applications
Quartz is used in glass, electronics, abrasives, and decorative objects; attractive pieces may be polished or made into jewelry.
Geological facts
Milky appearance commonly results from microscopic fluid inclusions or fine fractures that scatter light.
Field identification & locations
Look for hardness near 7, glass-scratching ability, and absence of cleavage; common in river and beach gravels worldwide. The smooth, rounded surface suggests a naturally worn pebble, though the image cannot establish provenance.
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