Quartz
Silicon Dioxide (SiO2)
mineral
Category
Manufactured Glass
Browse manufactured glass specimens identified by the Rock Identifier community.
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Feldspar
Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz (Milky or Chalcedony)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 with various cementing agents)
sedimentary
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Pebble)
Arenite (SiO2 based)
sedimentary
Quartzite River Rock
Metamorphic Quartzite (primarily SiO2)
metamorphic
Amber (Simulated/Faturan Style)
Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)
Organic Gemstone (not a mineral)
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Gemstone-set ring, likely cubic zirconia or diamond
Likely synthetic cubic zirconia (zirconium dioxide, ZrO₂); stones may alternatively be diamond (carbon, C)
gemstone
Pumice
Pumice
igneous
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz (Yellow/Citrine variety)
Crystalline Silicon Dioxide (SiO2)
mineral
Fossilized bone fragment (probable large mammal limb bone)
Mineral-replaced or permineralized bone; exact taxon cannot be determined from the image
fossil
Quartz (Clear or Smoky)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Likely pink feldspar (orthoclase or microcline)
Potassium feldspar, KAlSi₃O₈
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 composition dominant)
sedimentary
Milky Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (Sandstone)
sedimentary
White Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary rock composed mainly of quartz sand
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Sandstone or Weathered Conglomerate
Sedimentary Rock (Quartzose Sandstone / Lithic Arenite)
sedimentary