mineral
Milky quartz pebble
Quartz (SiO₂)
AI-generated identification · may be incorrectMohs hardness 7; white to translucent with a vitreous-to-waxy luster and irregular fracture. Quartz has a trigonal crystal structure and no cleavage; this small specimen appears naturally rounded, possibly water-worn.
Identified More mineral →
Explore Milky quartz pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Mohs hardness 7; white to translucent with a vitreous-to-waxy luster and irregular fracture. Quartz has a trigonal crystal structure and no cleavage; this small specimen appears naturally rounded, possibly water-worn.
Formation & geological history
Quartz commonly forms when silica-rich fluids crystallize in veins or cavities and is highly resistant to weathering, so fragments accumulate in streambeds and soils. Its age cannot be determined from the image; quartz occurs in rocks of nearly all geological ages.
Uses & applications
Quartz is used in glassmaking, electronics, abrasives, and decorative objects; this small pebble is mainly suitable for collecting or crafts.
Geological facts
Quartz is one of Earth’s most abundant minerals and ranks 7 on the Mohs scale.
Field identification & locations
Look for its glassy appearance, lack of cleavage, and ability to scratch ordinary glass; common worldwide in veins, beaches, and river gravels. The pictured piece is too small and visually nonspecific for a precise locality identification.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous