Cubic Zirconia
Zirconium dioxide (ZrO2)
mineral
Category
Synthetic Or Natural Fiber
Browse synthetic or natural fiber specimens identified by the Rock Identifier community.
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Zirconia (Ceramic) & Ion-X Glass
Zirconium Dioxide (ZrO2) and Ion-strengthened Aluminosilicate Glass
Synthetic Mineral / Glass
Goldstone
Avventurina (Cu + SiO2 glass)
mineral
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Goldstone
Aventurine Glass (Man-made)
mineral
Diamond (in jewelry)
Cubic Carbon (C)
mineral
Goldstone (Brown)
Aventurine glass
mineraloid (man-made)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Cubic Zirconia and Synthetic Ruby Jewelry
Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)
gemstone
Diamond (or Cubic Zirconia)
Crystallized Carbon (C) for Diamond; Zirconium Dioxide (ZrO2) for CZ
mineral
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Pink Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate
mineral
Blue Sapphire (likely lab-grown or treated)
Corundum (Aluminum Oxide, Al2O3)
gemstone
Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial dyes
mineral
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
mineraloid
Ruby
Corundum (Al2O3)
mineral
Green Glass (often marketed as 'Obsidian' or 'Green Quartz')
Amorphous Silica (SiO2) with copper or chromium additives
Mineraloid (Man-made)
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Cubic Zirconia (as a jewelry specimen)
Zirconium dioxide (ZrO2)
mineral
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Mineral Simulant (Synthetic Glass)
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Opalite
Man-made opalized glass
mineral
Faceted Diamond or Cubic Zirconia
Carbon (C) for Diamond; Zirconium dioxide (ZrO2) for CZ
mineral
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Diamond
Pure Carbon (C)
mineral
Red Tiger's Eye
SiO2 (Silicon Dioxide with iron inclusions)
mineral
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Opalite
Synthetic Opalised Glass
Mineral (Synthetic / Man-made)
Opaline Glass (Opalite)
Synthetic Silicon Dioxide Glass
Mineraloid (Man-made)
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
mineral (synthetic)
Silicon Carbide (Carborundum)
Moissanite (SiC), though mostly synthetic
mineral
Emerald
Beryl (Be₃Al₂Si₆Oထ₈) with Chromium/Vanadium impurities
gemstone
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Diamond (Faceted Colorless)
Diamond (Pure Carbon, C)
mineral
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary
Opalite
Synthetic Glass, SiO2 base with metallic inclusions
mineraloid (synthetic)
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Man-made Glass (Tumbled/Shaped)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Mineraloid (synthetic)
Opalite
Synthetic Glass (Simulated Opal)
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