Sandstone
Arenite (SiO2 based)
sedimentary
Category
Sedimentary (Base), Then Artificial
Browse sedimentary (base), then artificial specimens identified by the Rock Identifier community.
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Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3)
sedimentary
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone with Quarzite clasts
Arenite (SiO2 based)
sedimentary
Dalmatian jasper
Orbicular quartz-rich rhyolite, commonly marketed as Dalmatian jasper
igneous
Desert Varnish on Sandstone
Ferromanganese coating on Quartz Arenite
sedimentary
Weathered limestone or calcareous sandstone
Calcite-rich carbonate rock, chiefly calcium carbonate (CaCO₃), possibly fossiliferous limestone
sedimentary
Quartz (Druzy / Goldstone Gemstone Cabochon)
Silicon Dioxide (SiO2)
gemstone
Quartz with Iron Staining
SiO2 with Fe oxide impurities
mineral
Quartzite (or Chert/Flint gravel)
Quartzite (SiO2 with iron oxide inclusions)
metamorphic
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Iron Oxide cement)
sedimentary
Sandstone and River Pebbles
Sedimentary Rock (Sandstone / Quartzite / Chert)
sedimentary
Colorless Quartz (Rhinestone)
Silicon Dioxide (SiO2)
mineral
Fossilized Shark Tooth
Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Coarse Sandstone
Arenite (SiO2 based)
sedimentary
Limestone with Fossil
Sedimentary limestone, calcium carbonate (CaCO3)
sedimentary
Fossilized Shark Tooth
Carcharocles sp. or similar Lamniformes
fossil
River Stone (Sandstone or Siltstone)
Sedimentary Rock (Clastic)
sedimentary
Carved Mottled Greenish-Yellow Crystal/Glass Object
Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.
Man-made Object/Uncertain Mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Ferruginous)
Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)
sedimentary
Chert (Field Stone)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Sandstone pebble
Sandstone (siliciclastic sedimentary rock)
sedimentary
Sandstone Pebble
Arenite
sedimentary
Marcasite on Agate / Sphalerite-Pyrite Agate Geode Slice
Marcasite (FeS2) / Pyrite on Quartz (SiO2)
mineral
Painted Rock
Weathered Sedimentary Rock (Painted)
sedimentary
Heliotrope (Bloodstone)
Chalcedony quartz variety (SiO2) with hematite or jasper inclusions
mineral
Chert Arrowhead (Jasper)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary