Synthetic (Not A Natural Rock)

Diamond (Faceted Colorless)

Diamond (Pure Carbon, C)

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant

Diamond

Pure Carbon (C)

Opalite

Synthetic Glass, SiO2 base with metallic inclusions

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Opalite

Synthetic Glass (Simulated Opal)

Synthetic Marbled Aggregate (Footwear Component)

Ethylene-vinyl acetate (Croslite™)

Man-made Jewelry Charm (Enameled Metal)

Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.

River Stone (likely Siltstone or fine-grained Sandstone)

Clastic Sedimentary Rock (Lithic Wacke / Siltstone)

Blue sapphire ring

Corundum, aluminum oxide (Al₂O₃), blue variety colored mainly by iron and titanium

Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation

SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)

Man-made Glass (Tumbled/Shaped)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Lapis Lazuli

Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2

Goldstone (Red)

Aventurine Glass

Colorless faceted gemstone, likely cubic zirconia

Synthetic cubic zirconia (zirconium dioxide, ZrO₂); identity is visual and not definitive

Diamond (or Cubic Zirconia simulant)

Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Clear quartz sphere

Quartz (silicon dioxide, SiO₂), likely rock crystal or low-grade milky quartz

Blue glass-like gemstone specimen (likely dyed or synthetic quartz)

Uncertain; possibly blue-dyed quartz or synthetic glass, not confidently identifiable from the image

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

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

Smoky Quartz

Silicon Dioxide (SiO2)

Lapidary Wax (imitation/wax model)

Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Iridescent coated quartz (likely synthetic/display gemstone)

Quartz, silicon dioxide (SiO₂), likely faceted and surface-coated; exact material cannot be confirmed visually

Opalite crescent pendant

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

Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)

Silicon Dioxide (SiO2) with inclusions/dye

Cubic Zirconia (CZ)

Zirconium dioxide (ZrO2)

Blue Sapphire

Corundum (Al2O3)

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Ruby

Corundum (Al2O3 with Chromium traces)

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Opalite

Synthetic Opalized Glass (SiO2 + additives)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Diamond (Faceted Gemstone)

Native Carbon (C)

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Emerald

Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Opalite

Synthetic Opalised Glass

Opalite

Synthetic glass / Opaque silicious glass

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Opalite (a synthetic glass, often confused with Opal)

Silicon dioxide glass (SiO2nH2O, for natural opal)