Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Category
Igneous Or Sedimentary (Water Worn)
Browse igneous or sedimentary (water worn) specimens identified by the Rock Identifier community.
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Yellow Quartzite
Quartzite (SiO2 with iron oxide inclusions)
metamorphic
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
metamorphic
River Stone (Basalt or Siltstone with banding)
Polished Basaltic or Siliciclastic River Cobble
igneous or sedimentary
Banded Gneiss
Gneiss
metamorphic
Quartzite Cobble
Quartzite (primarily SiO2)
metamorphic
Milky Quartz (Tumbled/Water-worn)
Silicon Dioxide (SiO2)
mineral
Jasper (yellow/cream variety)
SiO₂ (Cryptocrystalline Quartz)
Sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz / River Cobble
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Banded Gneiss
Foliated Gneiss
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Bull Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite
Hydrothermal Quartz or Quartzite (SiO2)
metamorphic
Quartzite (Iron-stained)
Quartzite (mostly SiO2 with Fe2O3 impurities)
metamorphic
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Quartzite Cobble
Meta-quartzite (SiO2)
metamorphic
Quartz Pebble (River Rock)
Silicon Dioxide (SiO₂)
Mineral
Unakite
Unakite (altered granitic rock)
metamorphic
Brown Quartzite Pebble
Metadiagenetic Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
River Stone (Quartzite)
Metamorphosed Sandstone (SiO2)
metamorphic
Quartz (Agate or Chert pebble)
Silicon Dioxide (SiO2)
sedimentary
Native Gold
Native Gold (Au)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Gold Nugget
Native Gold (Au)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Porphyritic Rhyolite (Birdseye Rhyolite)
Rhyolite (Porphyritic texture)
igneous
Basalt River Stone
Basalt
igneous
Banded Gneiss
Gneiss (complex metamorphic silicate rock)
metamorphic
Quartz / Quartz Geode fragment
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite pebble
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
mineral