Sandstone
Arenite (SiO2 primarily)
sedimentary
Category
Manufactured Stone
Browse manufactured stone specimens identified by the Rock Identifier community.
Sandstone
Arenite
sedimentary
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Opalite-style pendant (likely synthetic glass, not natural opal)
Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)
gemstone
Pumice
Pumice
igneous
Basalt with Scoria/Vesicles
Aphanitic Igneous Rock (Fe/Mg rich)
igneous
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Silver (Sterling Silver Jewelry)
Argentum (Ag) mixed with Copper (Cu)
mineral
Dark basaltic rock, possibly vesicular basalt
Basalt; chiefly plagioclase feldspar, clinopyroxene, and commonly olivine or iron-titanium oxides
igneous
Synthetic opal cabochon/bead
Opal-like hydrated amorphous silica; likely lab-created polymer–silica opal or Gilson synthetic opal (SiO₂·nH₂O)
gemstone
Hematite cameo or hematine imitation
Hematite (Fe₂O₃); possibly synthetic hematine or black glass
mineral
Amber (possibly a small polished amber cabochon)
Fossilized tree resin; amber is an organic gemstone, not a mineral
gemstone
Strawberry Quartz (or Rose Quartz / Cherry Quartz)
Silicon Dioxide (SiO2) with Lepidocrocite, Hematite, or Goethite inclusions
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Basalt
Basalt
igneous
Oolitic Limestone
Oolitic Limestone (CaCO3)
sedimentary
Opalite
Man-made Glass (Synthetic Opalized Glass)
gemstone
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Green sea glass (likely bottle glass)
Human-processed soda–lime silicate glass; not a natural mineral or rock
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartzite (Lithic Artifact)
Quartzite (SiO2)
metamorphic
Colorless faceted gemstone (likely cubic zirconia)
Cubic zirconia, ZrO₂ (synthetic zirconium dioxide); possibly synthetic glass or lab-grown diamond
gemstone
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Boulder
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 with various cementing agents)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Fossiliferous Limestone
Carbonate Rock (CaCO3 with organic inclusions)
sedimentary
Quartzite River Rock
Metamorphic Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (mostly SiO2)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartzite Pebble
Metamorphosed Quartz-rich Sandstone (SiO2)
metamorphic