Synthetic (Ceramic)

Dyed or synthetic turquoise-blue glass-like specimen

Likely man-made colored glass or resin; exact identification requires testing

Weathered iron-rich sandstone or ironstone

Ferruginous sandstone; likely quartz-rich sandstone cemented or stained by iron oxides (hematite/goethite)

Moonstone ring

Moonstone, a feldspar variety (typically orthoclase or adularia; KAlSi₃O₈)

Hematite

Iron(III) oxide (Fe2O3)

Opalite-style pendant (likely synthetic glass, not natural opal)

Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)

Red gemstone ring, likely synthetic ruby or garnet

Ruby: corundum (Al₂O₃); possible alternative: almandine garnet (Fe₃Al₂(SiO₄)₃)

Blue opalite (often sold as synthetic opal)

Opalite glass; amorphous hydrated silica if natural opal (SiO₂·nH₂O)

Bismuth crystal

Bismuth (Bi), synthetic laboratory-grown crystal

Opalite

Man-made Opalized Glass (Synthetic Glass)

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Build-A-Bear Plush (Non-Geological)

Polyester fibers (C10H8O4)n and Synthetic Polymers

Opalite

Synthetic Glass, SiO2 base with metallic inclusions

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Red Quartzite (River Pebble)

Quartzite (primarily Silicon Dioxide - SiO2)

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Diamond (or Diamond Simulant)

Carbon (C)

Small iron-rich pebble, possibly hematite/limonite

Hematite (Fe₂O₃) or goethite–limonite (FeO(OH)·nH₂O)

Cubic Zirconia (Jewelry Setting)

Cubic Zirconia (ZrO2)

Cubic Zirconia (Faceted)

Zirconium Dioxide (ZrO2)

Cubic Zirconia (Faceted Gemstone)

Zirconium dioxide (ZrO2)

Opal stud earrings

Opal, hydrated amorphous silica (SiO₂·nH₂O)

Tumbled labradorite beads

Labradorite, a calcium-rich plagioclase feldspar (approximately (Ca,Na)(Al,Si)₄O₈)

Orange Sapphire

Corundum (Al2O3)

Ametrine

Silicon Dioxide (SiO2) with iron impurities

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

Turquoise cabochon or turquoise-bearing material

Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O

Rough White Zircon

Zircon (Zirconium Silicate, ZrSiO4)

Strawberry Quartz (or Sunstone / Tumbled Quartz)

Silicon Dioxide (SiO2) with Hematite/Lepidocrocite inclusions

Ruby

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Diamond (in jewelry)

Cubic Carbon (C)

Goldstone (Brown)

Aventurine glass

Heart-shaped faceted gemstone pendant

Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones

Blue glass-like heart pendant, likely synthetic blue spinel or colored glass

Unconfirmed; possibly synthetic spinel (MgAl₂O₄) or cobalt-colored glass

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic ZrO₂), possibly glass or white sapphire

Diamond (or Diamond Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Porcelain (Kaolin-based)

Alumina silicate ceramic (composed primarily of Kaolinite: Al2Si2O5(OH)4)

Yellow faceted gemstone, likely citrine or yellow sapphire

Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)

Ruby (faceted gemstone)

Corundum (Al2O3 with Cr impurities)

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)