Mineral (Synthetic Glass)

Tumbled opalite (likely man-made glass)

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

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Opalite

Synthetic glass / Simulated opal

Opalite (Synthetic Moonstone/Opal)

Synthetic Silica Glass

Green faceted gemstone earrings, likely synthetic emerald-colored glass or cubic zirconia

Undetermined; possible glass (amorphous silicate) or synthetic cubic zirconia (ZrO₂)

Loose faceted colorless gemstones, likely quartz or glass-like mineral chips

Most consistent with quartz (SiO₂), though the photograph cannot exclude synthetic cubic zirconia or glass

Opalite

Synthetic Opalised Glass

Opalite

Synthetic Opalite (Man-made glass)

Small clear crystal, possibly quartz or glass-like gemstone

Uncertain; likely quartz (SiO₂), but the image is insufficient to exclude man-made glass or cubic zirconia

Red faceted gemstone, likely synthetic ruby or red glass imitation

Possibly synthetic corundum (Al₂O₃:Cr³⁺); image alone cannot distinguish it from glass or another imitation

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Opalite

Synthetic glass / Opalized glass

Goldstone (Brown)

Aventurine glass

Blue-green faceted gemstone, possibly glass or synthetic material

Not identifiable from the image; possible synthetic spinel or glass

Gemstone ring (stone not identifiable)

Unknown; the small central stone may be a colorless gemstone or glass, and the surrounding metal is gold-colored alloy

Opalite

Synthetic glass (Opalite simulant)

Opalite

Synthetic glass / Opaque silicious glass

Clear Quartz crystals on a Matrix base (Geode fragment)

Silicon Dioxide (SiO2)

Opalite (a synthetic glass)

Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant

Blue cabochon gemstone ring

Uncertain; likely blue sapphire (corundum, Al₂O₃), blue topaz, or synthetic glass/spinel

Opalite

Synthetic Glass (Simulated Opal)

Opalite

Synthetic Opalised Glass

Small stud earring with a purple gemstone (possibly amethyst)

Possible amethyst, a purple variety of quartz (SiO₂); identification is uncertain from the image

Opalite

Synthetic Opalized Glass / Man-made Glass

Opalite

Man-made Glass (Synthetic Opalized Glass)

Blue Goldstone

Aventurine Glass

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Red glassy cabochon, likely synthetic ruby or red glass

Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Diamond-set gold ring

Diamond (carbon, C) in a gold-alloy setting; the stone may be a diamond or a diamond simulant

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Pink faceted gemstone, likely synthetic ruby or pink sapphire

Corundum (Al₂O₃), possibly chromium-colored ruby; synthetic origin likely

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

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

Opalite crescent pendant

Opalite (man-made opalescent glass; not a natural mineral)

Faceted gemstones, likely assorted quartz or glass-like gems

Not determinable from the photograph; possible quartz (SiO₂), topaz, or synthetic cubic zirconia

Blue goldstone (man-made glass)

Copper-bearing aventurine glass; synthetic silicate glass

Red glassy mineral specimen, likely synthetic ruby or red spinel

Most consistent with synthetic corundum (Al₂O₃, ruby) or synthetic spinel (MgAl₂O₄); exact identification requires testing

Opalite

Synthesized glass / Silicon dioxide glass

Milky Quartz

Silicon Dioxide (SiO2)

Clear faceted gemstone in an ornate metal bracelet

Unidentified transparent faceted stone; possibilities include quartz (SiO₂), zircon (ZrSiO₄), or glass—image alone cannot distinguish them

Faceted colorless gemstone, likely quartz (rock crystal)

Quartz, SiO₂

Goldstone

Aventurine glass