Mineral Simulant (Synthetic Glass)

Colorless faceted gemstone, likely quartz

Quartz (SiO₂), probably rock crystal; exact identification is uncertain from the strongly backlit image

Diamond (appearing in jewelry)

Diamond (pure Carbon, C)

Moissanite

Silicon Carbide (SiC)

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Sapphire

Corundum (Al2O3)

Dyed Agate Slice

Silicon Dioxide (SiO2) with artificial dyes

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Dyed Agate

Silicon Dioxide (SiO2) with synthetic dyes

White seed-bead gemstone strand, likely freshwater pearl or shell pearl

Pearl: nacreous calcium carbonate, chiefly aragonite (CaCO₃) in conchiolin; identification uncertain from image

Green faceted gemstone, likely tsavorite garnet

Tsavorite: green grossular garnet, Ca₃Al₂(SiO₄)₃

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Diamond (or Clear Quartz / Cubic Zirconia)

Carbon (C) or Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Aura Quartz

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Blue faceted gemstone, likely synthetic sapphire or blue glass

Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually

Opalite

Man-made Glass (SiO2 + additives)

Blue Goldstone

Aventurine Glass

Red faceted gemstone jewelry setting

Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing

Smoky Quartz

Silicon Dioxide (SiO2)

Black spinel bead bracelet

Spinel (magnesium aluminate), MgAl₂O₄

Diamond (in jewelry)

Carbon (C)

Pink Sapphire

Corundum (Al2O3 with trace Chromium and Iron)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Faceted clear gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂); exact identification requires refractive-index and hardness tests

Smoky Quartz

Silicon Dioxide (SiO2)

Amber (Simulated/Faturan Style)

Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Green cabochon gemstone, likely aventurine or dyed chalcedony

Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Green beryl gemstone (likely emerald or green beryl)

Beryl, Be₃Al₂Si₆O₁₈; green color from chromium/vanadium or iron

Amethyst gemstone ring

Quartz, purple variety — SiO₂

Gold-colored gemstone ring, likely citrine or glass imitation

Indeterminate from image; possible quartz (SiO₂) or yellow glass set in gold-colored metal

Black faceted gemstone, likely spinel or black tourmaline

Most plausibly black spinel (MgAl₂O₄); visually similar possibilities include schorl tourmaline (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) or synthetic glass

Red synthetic corundum (ruby-colored lab-grown sapphire)

Corundum, aluminum oxide (Al₂O₃), likely synthetic and chromium-colored

Hematite

Iron(III) oxide (Fe2O3)

Rough Corundum (likely Sapphire or Common Corundum)

Aluminum oxide (Al2O3)

Ruby

Corundum (Al2O3 with Chromium traces)

Red gemstone ring, likely synthetic ruby

Corundum (Al₂O₃), chromium-bearing; possibly lab-created ruby or red glass imitation

Tumbled amethyst

Amethyst, purple quartz (SiO₂), colored by trace iron and irradiation