Synthetic Polymer (Synthetic Material)

Tumbled blue-green stone, possibly aquamarine or chalcedony

Indeterminate from image; possibilities include beryl (Be₃Al₂Si₆O₁₈) or cryptocrystalline quartz (SiO₂)

Rainbow Hematite / Magnetic Hematite

Iron oxide (Fe2O3) - often synthetic/coated for beads

Blue-green faceted gemstone, possibly glass or synthetic material

Not identifiable from the image; possible synthetic spinel or glass

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Faceted black gemstone, likely black spinel

Spinel (MgAl₂O₄); identification from the image is uncertain

Blue cabochon gemstone, likely synthetic glass or dyed stone

Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli

Red cabochon gemstone ring, likely synthetic ruby or red glass

Possibly corundum (Al₂O₃, chromium-colored); identity cannot be confirmed from the image

Clear Quartz crystals on a Matrix base (Geode fragment)

Silicon Dioxide (SiO2)

Moissanite

Silicon Carbide (SiC)

Opalite

Opalescent Glass (SiO2 + coloring agents)

Black onyx or black obsidian bead bracelet

Likely chalcedony (microcrystalline quartz, SiO₂) if onyx; alternatively volcanic glass (obsidian)

Blue glass-like bead or gemstone keychain ornament

Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image

Gem-set gold ring

Unidentified transparent gemstone, possibly quartz or glass, set in a gold-colored metal ring

Opal cabochon or opal-like decorative specimen

Hydrated amorphous silica, SiO₂·nH₂O; likely synthetic or assembled opal material

Blue faceted gemstone, likely synthetic spinel or sapphire

Undetermined from image; possible synthetic corundum (Al₂O₃) or spinel (MgAl₂O₄)

Diamond-set gold ring (stone identity uncertain)

Possible diamond (crystalline carbon, C); metal setting appears gold-colored

Faceted red gemstone, likely ruby

Corundum (Al₂O₃), red variety colored mainly by chromium

Pink-purple faceted gemstone ring (likely garnet)

Likely almandine–pyrope garnet, (Fe,Mg)₃Al₂(SiO₄)₃; identification from the image is uncertain.

Opalite

Synthetic Opalite Glass

Opalite

Synthetic Opalised Glass

Opalite (Synthetic Moonstone/Opal)

Synthetic Silica Glass

Opalite

Synthetic Opalised Glass

Opalite

Synthetic Opalised Glass

Opalite (Man-made Glass)

Synthetic Opalised Glass

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Hematite bead strand

Hematite, α-Fe₂O₃ (iron(III) oxide)

Pearl and Garnet Glass

Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass

Blue Obsidian

Volcanic Glass (Amorphous)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

Pink faceted gemstone ring (stone uncertain)

Possibly tourmaline or glass; image alone cannot establish identity

Red glass-like crystal, likely synthetic ruby or red glass

Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Tumbled hematite

Hematite (Fe₂O₃), commonly sold as “magnetic hematite” when synthetic or magnetized

Ruby (rough or poorly polished corundum)

Corundum, Al₂O₃; red gem-quality corundum is ruby

Tumbled opalite (likely man-made glass)

Opalite glass; a synthetic opalescent glass, not a natural mineral species

Faceted red gemstone, likely ruby

Corundum (Al₂O₃), colored red by chromium; identification from the image is uncertain

Faceted Clear Gemstone (Likely Quartz or Cubic Zirconia)

Silicon Dioxide (SiO2) or Zirconium Dioxide (ZrO2)

Faceted colorless gemstone, likely quartz (rock crystal)

Quartz, SiO₂

Blue gemstone, likely tumbled sapphire or blue spinel

Corundum (Al₂O₃) if sapphire; alternatively spinel (MgAl₂O₄)

Faceted Quartz or Cubic Zirconia

SiO2 (Quartz) or ZrO2 (Cubic Zirconia)

Blue Goldstone

Synthetic glass with cobalt and copper inclusions