mineral
Tumbled milky quartz
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectLikely a rounded, polished quartz pebble with translucent white color and vitreous-to-waxy luster. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65.
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Physical properties
Likely a rounded, polished quartz pebble with translucent white color and vitreous-to-waxy luster. Quartz has Mohs hardness 7, a trigonal crystal structure, no cleavage, and specific gravity about 2.65.
Formation & geological history
Quartz forms in many igneous, metamorphic, and sedimentary settings; milky appearance comes from microscopic fluid inclusions or fractures. The image does not reveal its geological age or source; tumbling has rounded and polished it.
Uses & applications
Used for inexpensive jewelry, ornaments, and craft pieces; quartz is also important in glassmaking and electronics.
Geological facts
Quartz is one of Earth’s most abundant minerals and is highly resistant to weathering.
Field identification & locations
Look for hardness sufficient to scratch glass, glassy luster, and lack of cleavage; common sources include quartz veins and gravels worldwide. The specimen’s precise identity cannot be confirmed from appearance alone.
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Granite
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Septarian Pebble
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