Mineral Simulant (Synthetic Glass)

Diamond (or Diamond Simulant)

Carbon (C)

Opalite

Synthetic Opalized Glass

Opalite

Synthetic Glass (Simulated Opal)

Blue Zircon

Zircon (Zirconium Silicate - ZrSiO4)

Ruby (set in a ring; possibly synthetic or imitation)

Corundum, Al₂O₃; red color is typically caused by chromium

Goldstone

Aventurine Glass (Man-made)

Opalite

Synthetic Opalized Glass

Opalite

Synthetic Glass (SiO2 + impurities)

Red cabochon gemstone ring (likely glass or synthetic stone)

Undetermined; the image does not establish a natural mineral identity

Opalite

Synthetic Opalised Glass

Moissanite

Silicon Carbide (SiC)

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Diamond (or Diamond Simulant)

Carbon (C) or Zirconium dioxide (ZrO2) for CZ

Yellow-green faceted gemstone (possibly peridot)

Undetermined; peridot is gem-quality olivine, (Mg,Fe)₂SiO₄

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant (e.g., Cubic Zirconia ZrO2)

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

Goldstone (Brown)

Aventurine glass

Diamond (or Diamond Simulant like Cubic Zirconia)

Carbon (C) - if Diamond; Zirconium dioxide (ZrO2) - if Cubic Zirconia

Opalite

Synthetic Opalized Glass / Man-made Glass

Diamond (or Simulant)

Carbon (C) or relevant simulant formula (e.g., ZrO2 for Cubic Zirconia)

Opalite (Synthetic Moonstone/Opal)

Synthetic Silica Glass

Blue cabochon gemstone ring

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

Opalite

Synthetic Opalite (Man-made glass)

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Cubic Zirconia (CZ) in Gold-Plated Setting

Cubic Zirconium Dioxide (ZrO2)

Yellow jasper or polished yellow chalcedony

Microcrystalline quartz, SiO₂, likely iron-stained jasper/chalcedony

Opalite

Synthetic Opalised Glass

Clear Quartz crystals on a Matrix base (Geode fragment)

Silicon Dioxide (SiO2)

Cut diamond-like gemstone

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

Cut diamond tennis-chain jewelry

Diamond, crystalline carbon (C), cubic crystal system

Diamond (or Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Opalite

Synthetic glass / Opalized glass

Diamond (or Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Red glassy cabochon, likely synthetic ruby or red glass

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

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

Quartz, silicon dioxide (SiO₂)

Opalite

Man-made Glass (Synthetic Opalized Glass)

Cubic Zirconia (or possibly Diamond)

Zirconium dioxide (or Carbon)

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

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

Opalite

Synthetic Glass (Simulated Opal)

Blue Sapphire (Synthetic or Man-made Glass Imitation)

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

Pink faceted gemstone, likely synthetic ruby or pink sapphire

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

Opalite

Synthetic Opalised Glass