Corundum
Corundum (Al2O3)
Category
Browse synthetic material (not a rock or mineral) specimens identified by the Rock Identifier community.
Corundum
Corundum (Al2O3)
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
Sandstone (likely Greywacke or Lithic Sandstone)
Arenite / Wacke
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
Sandstone
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Ruby
Corundum (Al2O3 with Chromium traces)
Amethyst (Tumbled/Weathered Quartz)
Amethyst (SiO2 with iron impurities)
Blue Topaz
Topaz [Al2SiO4(F,OH)2]
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Shale
Laminated Mudstone
Quartz in Matrix (possibly Basalt or Siltstone host)
Silicon Dioxide (SiO2) in Host Rock
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
Strawberry Quartz
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite
Citrine
Citrine (Silicon Dioxide, SiO2)
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Smoky Quartz (with Druzy/Polished Edge)
Smoky Quartz (Silicon Dioxide, SiO2)
Borosilicate Glass (Manufactured)
SiO2 + B2O3 (Silicon dioxide and Boron trioxide)
Quartz (Milky/Crystalline)
Silicon Dioxide (SiO2)
Breciated Limestone with Calcite Veins
Sedimentary Breccia (CaCO3)
Ammolite
Biogenic gemstone (Aragonite, CaCO3)
Sandstone
Arenite
Sandstone (Ferruginous)
Arenite (Siliclastic Sedimentary Rock)
Porphyry (likely Porphyritic Andesite or Basalt)
Porphyritic Igneous Rock
Serpentinite (often called Jade or Nephrite substitute)
Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)
Asphalt Concrete
Bituminous conglomerate
Sandstone (with Concretion)
Arenite / Quartzose Sandstone
Sandstone
Arenite (composed primarily of SiO2)
Quartz / Common Agate
Silicon Dioxide (SiO2)