mineral
Milky quartz pebble
Quartz (silicon dioxide, SiO₂)
AI-generated identification · may be incorrectWhite to translucent, with a vitreous-to-waxy luster and irregular fracture; hardness 7 Mohs, trigonal crystal structure, no cleavage. The specimen appears small and rounded, likely naturally worn or tumbled.
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
White to translucent, with a vitreous-to-waxy luster and irregular fracture; hardness 7 Mohs, trigonal crystal structure, no cleavage. The specimen appears small and rounded, likely naturally worn or tumbled.
Formation & geological history
Quartz forms when silica-rich fluids crystallize in veins and cavities, or during igneous and metamorphic processes. Its age cannot be determined from the image; quartz is common in rocks of many geological ages.
Uses & applications
Quartz is used in glassmaking, electronics, abrasives, and decorative objects; attractive pieces may be used in jewelry or collections.
Geological facts
Milky appearance results from tiny fluid or gas inclusions that scatter light.
Field identification & locations
Look for glassy luster, hardness sufficient to scratch ordinary glass, and lack of cleavage; common worldwide in veins, pegmatites, and river gravels. The image alone cannot confirm quartz, though its appearance is consistent with it.
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