Mineraloid Like Synthetic Material

Opalite

Synthetic glass / Opaque silicious glass

Smoky Quartz

Silicon Dioxide (SiO2)

Clear gemstone earring (likely cubic zirconia)

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); identification from the image is uncertain

Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)

Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)

Pearl (Biogenic Mineraloid)

Calcium carbonate (Aragonite) and Conchiolin, CaCO3

Cubic Zirconia (Simulated Diamond)

Zirconium Dioxide (ZrO2)

Ruby

Corundum (Al2O3 with Chromium traces)

Ruby (Faceted)

Corundum (Al2O3 with Cr trace elements)

Pearl (Biogenic Mineraloid)

Calcium carbonate (CaCO3) primarily as Aragonite

Red faceted gemstone, likely synthetic ruby

Corundum (Al₂O₃), chromium-colored; possibly flame-fusion synthetic ruby

Pearl

Calcium Carbonate (Aragonite) with Conchiolin; formula: CaCO3

Red cabochon gemstone ring (likely ruby or red spinel; identity unconfirmed)

Possibly corundum (ruby, Al₂O₃) or spinel (MgAl₂O₄); visual identification alone cannot distinguish these from glass or synthetic stones.

Pearl (Imitation / Cultured Pearl)

Calcium carbonate (CaCO3) with conchiolin (or synthetic glass/plastic imitation)

Lapis Lazuli

Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Violet faceted gemstone, likely synthetic or simulant

Indeterminate from the image; possible violet sapphire (corundum, Al₂O₃), amethyst (quartz, SiO₂), or glass/another simulant

Colorless faceted gemstone, likely cubic zirconia

Synthetic cubic zirconia (ZrO₂), tentative; possibly diamond or synthetic moissanite

Diamond

Diamond (C)

Opal cabochon

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

Limonite and Goethite (Ironstone)

Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)

Honey-colored amber

Amber (fossilized plant resin; chiefly polymerized terpenoid compounds)

Goldstone

Aventurine Glass (Man-made glass with copper inclusions)

Chipped Glass/Plastic Fragment

Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic

Faceted clear gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity is uncertain because the strong flash and cut obscure diagnostic features

Sapphire (likely blue synthetic sapphire or blue glass in a ring)

Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.

Red faceted gemstone, possibly synthetic ruby or red glass

Unidentified red gem; ruby is corundum (Al₂O₃), while glass is amorphous silicate

Chalcanthite (Likely Synthetic/Lab-Grown)

Hydrated copper(II) sulfate (CuSO4·5H2O)

Smoky Quartz

Silicon Dioxide (SiO2)

Opalite

Synthetic Glass (Simulated Opal)

Opalite

Synthetic glass / Opalized glass

Opalite

Synthetic Glass (Simulated Opal)

Opalite

Synthetic Glass (SiO2 + impurities)

Blue cabochon gemstone, likely blue sapphire

Corundum (Al₂O₃), colored blue by trace iron and titanium

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Citrine

Silicon Dioxide (SiO2)

Opalite

Synthetic glass / Opaque silicious glass

Diamond ring

Diamond, crystalline carbon (C), likely a faceted mounted stone

Silicon

Element Si

Amber with Organic Inclusions

Succinite (fossilized resin)

Rose Quartz

Silicon Dioxide (SiO2)

Green gemstone ring (likely synthetic or imitation emerald)

Possibly emerald, beryl (Be₃Al₂Si₆O₁₈); the photo cannot confirm the center stone’s identity or whether it is natural.

Blue resin-coated or dyed stone cabochon

Likely dyed chalcedony/agate (microcrystalline quartz, SiO₂); exact material is uncertain from the image

Red-orange cabochon, likely carnelian or glass imitation

Carnelian: chalcedony (microcrystalline SiO₂), commonly iron-colored