Ruby
Corundum (Al2O3 with Chromium traces)
Category
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
Ruby
Corundum (Al2O3 with Chromium traces)
Ruby
Corundum (Al2O3 with Chromium traces)
Blue Sapphire
Corundum (Al2O3)
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)
Anthropogenic Heat Source (Electronic/Industrial Interface)
Thermal IR emission (Electronic infrastructure)
Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)
Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
Dyed Agate
Silicon Dioxide (SiO2) - variety Chalcedony
Sodium Polyacrylate (Superabsorbent Polymer)
Sodium Polyacrylate [-CH2-CH(COONa)-]n
Amber
Succinite (Resinite)
Ametrine
Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)
Strawberry Quartz
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
Zircon
Zirconium Silicate (ZrSiO₄)
Pink Dyed Agate
Silicon Dioxide (SiO2) with synthetic pigment
Dyed Crackle Quartz
Silicon Dioxide (SiO2) with synthetic dye
Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
Pyrite
Iron Sulfide (FeS2)
Ruby
Corundum (Al2O3 with Chromium traces)
Blue Sapphire
Corundum (Al2O3)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Ruby
Corundum (Al2O3 with Chromium trace impurities)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
White Sapphire
Corundum (Al2O3)
Smoky Quartz
Silicon dioxide with aluminum impurities (SiO2)
Ammolite
Biogenic gemstone (Aragonite, CaCO3)
Kyanite
Kyanite (Al2SiO5)
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Pyrite
Iron Disulfide (FeS2)
Man-made Green Quartz (Lab-grown or Treated)
Silicon Dioxide (SiO2) with artificial coloration
Chrysocolla in Malachite
Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)
Rough Emerald (Beryl)
Emerald (Be3Al2(SiO3)6 with Cr/V impurities)
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
Hematite
Iron(III) oxide (Fe2O3)
White Marble
Recrystallized Calcite (CaCO3)
Lapis Lazuli
Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)
Cubic Zirconia (Simulated Diamond)
Zirconium Dioxide (ZrO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)