Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
Category
Browse industrial byproduct (anthropogenic rock) specimens identified by the Rock Identifier community.
Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
Agate
Silicon dioxide (Chalcedony), SiO2
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar group)
Diamond (Cut Gemstone)
Carbon (C)
Ruby
Corundum (Al2O3)
White Marble
Recrystallized Calcite (CaCO3)
Diamond (or Cubic Zirconia simulant)
C (Carbon) or ZrO2 (Zirconium Dioxide)
Pink Quartz
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz (Yellow/Iron-stained Quartzite or Chalcedony)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Rough Diamond (or Herkimer Diamond Quartz)
Diamond (C) or Quartz (SiO2)
Quartz (Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2)
Rough Diamond
Diamond (pure Carbon, C)
Diamond
Carbon (C)
Cubic Zirconia (Set in Jewelry)
Zirconium Dioxide (ZrO2)
Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Yellow Quartzite Pitting Pebble
Metamorphic Quartzite (SiO2)
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
Faceted Diamond / Moissanite / Cubic Zirconia
Carbon (C) if Diamond, Silicon Carbide (SiC) if Moissanite
Hematite Nodule
Hematite (Alpha Fe2O3)
Milky Quartz
Silicon Dioxide (SiO2)
Quartzite Pebble
Quartzite (SiO2)
Quartz on Feldspar
Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)
Limestone (with possible Manganese oxide inclusions)
Sedimentary Calcium Carbonate (CaCO3)
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]
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Chalcedony (Agate)
Cryptocrystalline Quartz (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)
Yellow Quartz (Citrine Quartz or Yellow Chalcedony)
Silicon Dioxide (SiO2)
Silver (Native Element)
Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen