Quartz (Citrine variety)
Silicon Dioxide (SiO2)
mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Learn about Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites) in the encyclopedia
View all →
Granite (Phaneritic Igneous Rock)
Granite
igneous
Yellow Sapphire (Corundum)
Corundum (Aluminum Oxide, Al2O3)
mineral
Garnet and Quartz
Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)
mineral
Scoria (Red Lava Rock)
Scoria (Vesicular Basalt/Andesite)
igneous
Soapstone (Steatite) and Quartz mix
Steatite (Mg3Si4O10(OH)2) and Quartz (SiO2)
metamorphic
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Basalt (Porphyritic)
Basalt (Mafic Extrusive Igneous Rock)
igneous
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
Mineral
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Cupronickel (on a 1981 Mexico 20 Pesos coin)
Copper-Nickel Alloy (Cu75Ni25)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amazonite
Amazonite (KAlSi3O8 – a variety of Microcline, a Potassium Feldspar)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)
Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)
Mineral for Fluorite; Mineral/Rock for Jadeite (as it's often a rock composed primarily of jadeite mineral)
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with Fe impurities)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Serpentine
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4)
metamorphic
Green Fluorite (Beaded)
Fluorite (Calcium Fluoride, CaF2)
mineral
Pegmatite
Igneous Pegmatite
igneous
Rose Quartz
Silicon dioxide (SiO2)
mineral
Raw Garnet Fragment
Nesosilicate Group (e.g., Almandine, Fe3Al2(SiO4)3)
mineral
Pegmatite (White Granite variant)
Pegmatitic Granite (Quartz and Feldspar rich)
igneous
Prasiolite (Green Quartz) / Sea Glass Amalgam
SiO2 (Silicon Dioxide)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Labradorite
Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3
mineral
Garnet
Garnet group (X3Y2(SiO4)3)
mineral
Orange Calcite
Calcite (CaCO3)
Mineral
Magnetite
Magnetite (Fe3O4)
mineral
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Variscite
Variscite (AlPO4·2H2O)
mineral
Rhodonite
Rhodonite (MnSiO3)
Mineral
Garnet
Garnet Group (formula varies, e.g., Almasndine: Fe3Al2(SiO4)3)
mineral
Moonstone
Orthoclase Feldspar (specifically showing adularescence)
Mineral
Pegmatite
Igneous Pegmatite
igneous
Silicon
Silicon (Si)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Red Garnet (Pyrope or Almandine)
Garnet Group (A3B2(SiO4)3)
mineral