Mineral Simulant (Synthetic Glass)

Cut diamond tennis-chain jewelry

Diamond, crystalline carbon (C), cubic crystal system

Cut diamond-like gemstone

Likely cubic zirconia (zirconium dioxide, ZrO₂) or glass; natural diamond (carbon, C) cannot be confirmed from an image

Opalite

Synthetic Glass (Simulated Opal)

Cubic Zirconia (CZ) in Gold-Plated Setting

Cubic Zirconium Dioxide (ZrO2)

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

Man-made Glass (Synthetic Opalized 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

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Colorless faceted quartz-like gemstone

Likely quartz (SiO₂), though the appearance may also indicate man-made glass or cubic zirconia

Pink faceted gemstone, likely synthetic ruby or pink sapphire

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

Cubic Zirconia (or possibly Diamond)

Zirconium dioxide (or Carbon)

Diamond (or Diamond Simulant)

Carbon (C) - Native Element

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

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

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

Opalite crescent pendant

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

Blue goldstone (man-made glass)

Copper-bearing aventurine glass; synthetic silicate glass

Faceted colorless gemstone, likely cubic zirconia or quartz

Uncertain from photograph; cubic zirconia (ZrO₂) is the leading visual possibility, with quartz (SiO₂) as an alternative

Cubic Zirconia (in Jewelry)

Zirconium Dioxide (ZrO2)

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 or glass imitation

Most likely quartz (SiO₂), though the strong glare and visible facet pattern could indicate cubic zirconia or lead glass

Amethyst quartz cluster

Quartz, SiO₂; purple variety amethyst

Diamond in a gold-tone setting

Diamond, crystalline carbon (C)

Blue Sapphire (likely costume glass imitation)

Corundum (Al2O3) with iron/titanium impurities

Faceted colorless gemstone, likely quartz (rock crystal)

Quartz, SiO₂

Goldstone

Aventurine glass

Cat's Eye Moonstone (Simulated/Synthetic or natural Cat's Eye Quartz/Glass)

There is no single scientific name. The appearance suggests either: Moonstone (feldspar group), Cat's Eye Quartz (SiO2), Apatite (Ca5(PO4)3(F,Cl,OH)), or most likely a synthetic material such as Fiber Optic Glass or 'Opalite' (a type of glass).

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Gemstone rings (stones not reliably identifiable)

The pale stone may be quartz or another translucent gem; the red stone may be ruby, garnet, or synthetic corundum. Image detail is insufficient for identification.

Opalite

Synthetic Opalite Glass (Silicon Dioxide)

Pink-purple faceted gemstone ring (likely garnet)

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

Blue Obsidian

Volcanic Glass (Amorphous)

Ruby / Red Corundum

Al2O3 (Aluminum Oxide with Chromium trace)

Faceted yellow-brown gemstone ring, possibly citrine

Unidentified faceted gem; citrine is quartz (SiO₂), but the photo is insufficient for a reliable identification

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

Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)

BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire

Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material

Green iridescent glass cabochon or synthetic gemstone

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