Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)
Category
Browse synthetic material (not a rock or mineral) specimens identified by the Rock Identifier community.
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)
Sandstone
Sandstone (Quartz-rich sedimentary rock)
Diamond
Natural Diamond (Carbon, C)
Diamond (Cut Gemstone)
Carbon (C)
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Quartz-veined Limestone
Sedimentary limestone with quartz/calcite veinlets
Sandstone
Arenite (SiO2 principal composition)
Sandstone
Arenite (Clastic Sedimentary Rock)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz with Limonite/Goethite staining)
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Sandstone
Clastic Sedimentary Rock
Quartz Pebble
Silicon Dioxide (SiO2)
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone
Clastic Sedimentary Rock
Painted Sandstone
Sandstone (clastic sedimentary rock) with acrylic/artistic coating
Boulder Opal
Hydrated Silica (SiO2·nH2O)
Sandstone
Arenite (primarily Quartz and Feldspar)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (SiO2 predominantly)
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Sandstone (SiO2 with iron oxides and clay)
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
Granite Cobble / Gneiss (River Rock)
Granitic Gneiss / Felsic Igneous Rock
Sandstone
Sandstone (SiO2 rich)
Rock Fragment with Calcite/Quartz Vein
Polymictic Rock Fragment (SiO2 / CaCO3)
Sandstone
Sedimentary Clastic Rock
Sandstone
Clastic sedimentary rock (primarily SiO2)
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of cellulose)
Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)
Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))
Sapphire (Blue)
Corundum (Al2O3)
White Sapphire
Corundum (Al2O3)
Sandstone
Sedimentary Clastic Rock
Sandstone (Pebble)
Arenite (SiO2 based)
Sandstone
Sedimentary Rock (Quartz arenite or arkose)
Sandstone
Arenite (primarily SiO2)
Opalite
Synthetic Glass / Man-made Opal Simulant
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities and natural radiation
Tourmalinated Quartz
Crystalline Silicon Dioxide with Schorl inclusions (SiO2 + NaFe3Al6(BO3)3Si6O18(OH)4)
Sandstone (likely Greywacke or Lithic Sandstone)
Arenite / Wacke
Sandstone
Arenite (primarily SiO2)