mineral
Quartz-rich metallic-looking pebble
Likely quartz or quartzite; exact identification is uncertain from the blurred image
AI-generated identification · may be incorrectGray-white, strongly sparkly surface with granular texture and possible glassy luster; quartz has Mohs hardness 7, no cleavage, conchoidal fracture, and specific gravity about 2.65. The apparent metallic shine may be reflections from crystal faces or a coating rather than native metal.
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Physical properties
Gray-white, strongly sparkly surface with granular texture and possible glassy luster; quartz has Mohs hardness 7, no cleavage, conchoidal fracture, and specific gravity about 2.65. The apparent metallic shine may be reflections from crystal faces or a coating rather than native metal.
Formation & geological history
Could be a naturally weathered quartz/quartzite fragment, or a polished/coated specimen; quartz commonly forms in hydrothermal veins and igneous or metamorphic rocks from Precambrian to recent ages.
Uses & applications
Quartz is used in glass, ceramics, electronics, abrasives, and decorative stone; attractive pieces may be sold as specimens or cabochons.
Geological facts
The image is too out-of-focus to distinguish quartz from pyrite-bearing rock, mica-rich schist, or a metallic-coated stone.
Field identification & locations
Test an inconspicuous edge with steel: quartz should scratch glass and resist a steel knife. Check for distinct cubic pyrite crystals, flaky mica, magnetism, and a visible metallic streak; local geology is important.
