Opalite Egg
Synthetic Glass (Simulated Opal)
mineral
Category
Sedimentary (Synthetic)
Browse sedimentary (synthetic) specimens identified by the Rock Identifier community.
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Diamond (or Diamond Simulant)
C (Carbon) or synthetic equivalent
gemstone
Opalite
Synthetic Silicon Dioxide (SiO2)
mineral
Blue Opal Inlay (Simulated/Lab-created)
Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin
mineraloid
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Opalite
Synthetic Glass (Silica-based)
gemstone
Synthetic Faux Fur Fursuit
Polyacrylonitrile / Polyester (Synthetic Textile)
not a rock (synthetic material/costume)
Opaline Glass (Opalite)
Synthetic Silicon Dioxide Glass
Mineraloid (Man-made)
Opalite
Synthetic Glass (Simulated Opal)
mineral
Diamond (or Clear Quartz / Cubic Zirconia)
Carbon (C) or Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)
gemstone
Zirconia (Ceramic) & Ion-X Glass
Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass
Synthetic Mineral / Glass
Clear Quartz (faceted) / Diamond Simulant
Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)
gemstone
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
man-made composite (lithified equivalent of sedimentary)
Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)
BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel
mineral
Bouncy Ball (Synthetic Rubber Polymer)
Polybutadiene / Ethylene Vinyl Acetate (EVA)
Synthetic material (Not a rock or mineral)
Man-made Ceramic / Clay Figurine
Aluminosilicate Ceramic (Processed Clay)
Synthetic (not a rock or mineral)
Diamond (or Cubic Zirconia)
Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ
mineral
Note: The image provided is a fabric sock, not a geological specimen.
Polyester-Cotton Blend with Elastane
Synthetic/Natural Fiber (Non-Geological)
Ametrine
SiO2 (Silicon Dioxide with iron impurities)
gemstone
Blue Sapphire
Corundum (Al2O3)
gemstone
Carborundum (Silicon Carbide)
Silicon carbide (SiC)
mineral
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
mineral (synthetic)
Moissanite
Silicon Carbide (SiC)
mineral
Cubic Zirconia (as a jewelry specimen)
Zirconium dioxide (ZrO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Pink/red faceted gemstone, likely synthetic ruby or pink sapphire
Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material
gemstone
Blue Sapphire (likely lab-grown or treated)
Corundum (Aluminum Oxide, Al2O3)
gemstone
Faceted Diamond or Cubic Zirconia
Carbon (C) for Diamond; Zirconium dioxide (ZrO2) for CZ
mineral
Blue Quartz / Glass Gemstone Pendant
SiO2 (Silicon Dioxide) or Synthetic Glass
gemstone
Diamond (or Cubic Zirconia simulant)
C (Carbon) or ZrO2 (Zirconium Dioxide)
gemstone
Orgonite Pyramid (containing Amethyst and mixed minerals)
Silicon Dioxide (SiO2) in synthetic resin
gemstone
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Diamond or Cubic Zirconia
Carbon (diamond) or Zirconium dioxide (cubic zirconia)
gemstone
Emerald
Beryl (Be₃Al₂Si₆Oထ₈) with Chromium/Vanadium impurities
gemstone
Strawberry Quartz (Hematoid Quartz)
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
mineral
Synthetic Marbled Aggregate (Footwear Component)
Ethylene-vinyl acetate (Croslite™)
not a rock (man-made polymer)
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Silicon Carbide (Carborundum)
Moissanite (SiC), though mostly synthetic
mineral
Sapphire
Corundum (Al2O3)
gemstone