mineral
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness 7 on Mohs scale, translucent to clear white/gray color, vitreous to greasy luster, trigonal crystal structure, conchoidal fracture, no cleavage, specific gravity ~2.65.
Identified More mineral →
Explore Quartz Pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness 7 on Mohs scale, translucent to clear white/gray color, vitreous to greasy luster, trigonal crystal structure, conchoidal fracture, no cleavage, specific gravity ~2.65.
Formation & geological history
Formed in hydrothermal veins, pegmatites, and as a primary constituent in igneous, metamorphic, and sedimentary rocks. Naturally rounded and smoothed through water action and erosion in riverbeds or coastal environments.
Uses & applications
Used in landscaping, glass manufacturing, electronics (silicon source), abrasives, and as decorative river rocks or pocket stones.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. It exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress.
Field identification & locations
Look for a translucent pebble that scratches glass easily and leaves no streak. Very common in riverbeds, beaches, and soil worldwide.
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
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
Calcite–fluorite mineral specimen with iron-oxide staining
Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides
mineral