Chert (Commonly known as Flint)
Silicon Dioxide (SiO2)
Category
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Chert (Commonly known as Flint)
Silicon Dioxide (SiO2)
Chert (Jasper/Common Chert Pebble)
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Tumbled greenstone, likely nephrite jade
Nephrite jade (interlocking tremolite–actinolite amphibole; Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂)
Sandstone (with iron staining)
Quartz Arenite / Ferruginous Sandstone
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Green Quartzite
Metamorphic Quartzite (often colored by chromium-bearing minerals or fuchsite)
Chert
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Chert (Yellow/Tan variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert Nodule (Flint)
Chert (Silicon Dioxide, SiO2)
Yellow Sapphire (Raw)
Corundum (Al2O3)
Pyrite
Iron Sulfide (FeS2)
Chert (Siltstone / Flint)
SiO2 (Cryptocrystalline Quartz)
Goldstone (Brown)
Aventurine glass
Engineered Quartz Stone
Agglomerated Quartz (SiO2 + Polymer Resin)
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Granite
Granite (Felsic Plutonic Rock)
Jasper
Silicon dioxide (SiO2) with impurities
Bauxite
Bauxite (Al(OH)3, AlO(OH))
Diorite (Gneissic)
Diorite
Coquina
Bioclastic Limestone
Ferruginous Sandstone (Ironstone)
Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)
Chert / Green Jasper
Silicon Dioxide (SiO2)
Blue opalite (often sold as synthetic opal)
Opalite glass; amorphous hydrated silica if natural opal (SiO₂·nH₂O)
Coquina
Biogenic Limestone (mostly Calcium Carbonate, CaCO3)
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
Sandstone
Arenite (SiO2, often with CaCO3 or Fe2O3 cement)
Sandstone
Arenite (composed primarily of SiO2)
Flint / Chert
Microcrystalline quartz (SiO2)
Chert (Flint / Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Black Chert or Flint)
Silicon Dioxide (SiO2)
Tektite (Indochinite)
Tektite (Amorphous Silica Glass)
Porcelain (Kaolin-based)
Alumina silicate ceramic (composed primarily of Kaolinite: Al2Si2O5(OH)4)
Chert (Flint / Jasper)
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2)
Turquoise (beads)
Turquoise; CuAl6(PO4)4(OH)8·4H2O
Mother of Pearl (Nacre) / Shell Fragment
Biogenic Calcium Carbonate (Aragonite and Conchiolin)
Chert (Black Flint)
Silicon Dioxide (SiO2)
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2