Cubic Zirconia (Set in Jewelry)
Zirconium Dioxide (ZrO2)
gemstone
Category
Synthetic (Ceramic)
Browse synthetic (ceramic) specimens identified by the Rock Identifier community.
Learn about Synthetic (Ceramic) in the encyclopedia
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Blue Sapphire
Corundum (Al2O3)
mineral
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
mineral
Diamond (Faceted Gemstone)
Native Carbon (C)
mineral
Quartzite
Quartzite (SiO2 main component)
metamorphic
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Lepidolite Polished Point
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Granitic Pegmatite (with Pink Feldspar and Quartz)
Pegmatite (KAlSi3O8 + SiO2)
igneous
Lapis Lazuli
Lapis lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)
metamorphic
Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium
mineral
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Synthetic / Manufactured Artifact
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Quartz (Druzy / Goldstone Gemstone Cabochon)
Silicon Dioxide (SiO2)
gemstone
Colorless faceted gemstone, likely cubic zirconia
Synthetic cubic zirconia (zirconium dioxide, ZrO₂); identity is visual and not definitive
gemstone
Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)
Silicon Dioxide (SiO2) with inclusions/dye
gemstone
Opalite
Man-made opalescent glass
gemstone
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
gemstone
Opalite
Man-made Glass (Synthetic Opalized Glass)
mineral
Bismuth Crystal
Bismuth (element symbol Bi, atomic number 83)
mineral
Red Agate (Carnelian)
Silicon Dioxide (SiO2)
gemstone
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide, Fe2O3
mineral
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass
Diamond (or Cut Gemstone / Cubic Zirconia)
Carbon (C)
gemstone
Dyed Purple Agate Sliced Tablet
Silicon Dioxide (SiO2), variety Chalcedony
gemstone
Emerald
Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium
mineral
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Mineraloid (Man-made Glass)
Blue Quartz (specifically Dumortierite Quartzite)
Silicon Dioxide (SiO2) with inclusions of Dumortierite (Al7BO3(SiO4)3O3)
metamorphic
Chlorite (Small Flakes/Sand)
Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
mineral
Black Tourmaline in Quartz and Feldspar Matrix
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) with Quartz and Feldspar
igneous
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Coal (Bituminous or Anthracite)
Carbonaceous Sedimentary Rock
sedimentary
Ruby (varietal of Corundum)
Corundum (Al2O3:Cr)
gemstone
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Ruby
Corundum (Al2O3 with Chromium trace)
mineral
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral