Quartz Pebble
Silicon Dioxide (SiO2)
Category
Browse industrial byproduct specimens identified by the Rock Identifier community.
Quartz Pebble
Silicon Dioxide (SiO2)
Diamond
Native Carbon (C)
Diamond (Martapura/Borneo Diamond)
Carbon (C) - Diamond
Quartz with Muscovite Mica
Silicon Dioxide (SiO2) with Potassium aluminum silicate hydroxide fluoride [KAl2(AlSi3O10)(F,OH)2]
Quartz Geode
Silicon Dioxide (SiO2)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartzite River Rock
Quartzite (SiO2)
Diamond (or Diamond Simulant/Cubic Zirconia)
Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3) with iron and titanium impurities
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
Ruby and Diamond in Gold Setting
Corundum (Al2O3) and Diamond (C)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 based with quartz grains)
Quartz Pebble
Silicon Dioxide (SiO2)
Limestone with Calcite Crystals
Sedimentary Rock containing Calcium Carbonate (CaCO3)
Yellow Quartz (Citrine Quartz or Yellow Chalcedony)
Silicon Dioxide (SiO2)
Silver (Native Element)
Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen
Tourmaline (Multi-colored)
Complex Borosilicate (Na,Ca)(Li,Mg,Al,Fe)3Al6(BO3)3Si6O18(OH)4
Peridot in Basalt
Olivine ((Mg, Fe)2SiO4) in Basalt
Basalt with Iron Oxide staining
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Sandstone (with differential weathering)
Arenite / Quartz Sandstone (SiO2)
Marble
Recrystallized Limestone (CaCO3)
Garnet in Host Rock
Garnet Group (A3B2(SiO4)3)
Gold and Diamond
Native Gold (Au) and Diamond (C)
Quartz Pebble
Silicon Dioxide (SiO2)
Vesicular Basalt
Basalt (Mafic volcanic rock)
Sapphire Rough (Corundum)
Corundum (Aluminum Oxide, Al2O3)
Bauxite
Hydrated Aluminum Oxides (primarily Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
Blue Glass or Slag Glass
Amorphous Silica (Anthropogenic Glass)
Ironstone (Limonitic/Hematitic Sandstone)
Ferruginous sandstone (predominantly Fe2O3 and FeO(OH))
Diamond
C (Native Carbon)
Bornite
Bornite (Cu5FeS4)
Diamond (Cut Specimen)
Carbon (C)
Blue Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
Quartzite
Quartzite (SiO2)
Basalt
Basalt (extrusive igneous rock)