Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Category
Mineraloid (Synthetic)
Browse mineraloid (synthetic) specimens identified by the Rock Identifier community.
Learn about Mineraloid (Synthetic) in the encyclopedia
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Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Anthropogenic / Non-mineral
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
gemstone
Diamond (or Diamond Simulant)
Carbon (C) if diamond, various if simulant
gemstone
Cubic Zirconia
Zirconium Dioxide (ZrO2)
mineral
Diamond (or Diamond Simulant)
Carbon (C)
gemstone
Cubic Zirconia (Jewelry Setting)
Cubic Zirconia (ZrO2)
gemstone
Cubic Zirconia (Faceted)
Zirconium Dioxide (ZrO2)
mineral
Obsidian
Volcanic glass (silica-rich rhyolitic melt; primarily SiO₂)
igneous
Obsidian
Obsidian (Extrusive Volcanic Glass)
igneous
Obsidian
Volcanic Glass (comprised primarily of SiO2)
Igneous
Black Obsidian
Volcanic Glass (predominantly SiO2, Silicon Dioxide)
igneous
Mahogany Obsidian
Volcanic glass (SiO2 + Fe2O3)
igneous
Cubic Zirconia (Faceted Gemstone)
Zirconium dioxide (ZrO2)
gemstone
Opal stud earrings
Opal, hydrated amorphous silica (SiO₂·nH₂O)
gemstone
Tumbled labradorite beads
Labradorite, a calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)
mineral
Orange Sapphire
Corundum (Al2O3)
gemstone
Ametrine
Silicon Dioxide (SiO2) with iron impurities
mineral
Blue glassy mineral specimen, possibly blue topaz or aquamarine
Tentatively topaz (Al₂SiO₄(F,OH)₂) or beryl/aquamarine (Be₃Al₂Si₆O₁₈); identification is limited by severe image blur
gemstone
Hematite
Hematite (Fe₂O₃), likely a polished specular hematite palm stone
mineral
Turquoise cabochon or turquoise-bearing material
Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O
gemstone
Rough White Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Strawberry Quartz (or Sunstone / Tumbled Quartz)
Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions
mineral
Ruby
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Diamond (in jewelry)
Cubic Carbon (C)
mineral
Heart-shaped faceted gemstone pendant
Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones
gemstone
Blue glass-like heart pendant, likely synthetic blue spinel or colored glass
Unconfirmed; possibly synthetic spinel (MgAl₂O₄) or cobalt-colored glass
gemstone
Colorless faceted gemstone, likely cubic zirconia
Cubic zirconia (synthetic ZrO₂), possibly glass or white sapphire
gemstone
Diamond (or Diamond Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
gemstone
Yellow faceted gemstone, likely citrine or yellow sapphire
Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)
gemstone
Ruby (faceted gemstone)
Corundum (Al2O3 with Cr impurities)
gemstone
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Ruby (Rough/Raw)
Corundum (Al2O3:Cr)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Ruby (varieties of Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Colorless faceted gemstone, likely quartz
Quartz (SiO₂), probably rock crystal; exact identification is uncertain from the strongly backlit image
gemstone
Blue-green tumbled gemstone, likely turquoise or dyed turquoise
Turquoise: hydrated copper–aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; identification is uncertain from the blurry image
gemstone
Assorted Semi-Precious Gemstone Crosses
Quartz, Silicates, Carbonates (various)
mineral
Rainbow carborundum (silicon carbide)
Silicon carbide, SiC; commonly synthetic moissanite/carborundum specimen
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral