Synthetic Polymer (Synthetic Material)

Tumbled Clear Quartz and Citrine Points

Silicon Dioxide (SiO2)

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Polished gemstone tower assortment

Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Ring with an Orange Inlay

N/A (Man-made object)

Opalite

Man-made Glass (Synthetic Opalized Glass)

Opalite

Synthetic Glass / Man-made Opal Simulant

Opalite

Synthetic Opalized Glass / Man-made Glass

Quartzite (Engineered Stone)

Silicon Dioxide (SiO2) based synthetic composite

Cut red gemstone in a gold ring

Likely ruby (corundum, Al₂O₃), though red spinel or garnet is also possible from the image

Dyed Agate Geode

Silicon Dioxide (SiO2) with artificial pigment

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with Fe3+ impurities

Dyed Purple Agate Sliced Tablet

Silicon Dioxide (SiO2), variety Chalcedony

Blue Goldstone

Man-made glass with cobalt and metal flecks

Emerald

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

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Silicon

Crystalline Silicon (Si)

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Diamond (likely rough or included fragment)

Diamond, crystalline carbon (C), cubic crystal system

Faceted yellow gemstone, likely citrine

Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing

Polished amethyst cabochon

Amethyst, purple quartz (SiO₂)

Emerald

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

Diamond

Native Carbon (C)

Assorted gemstone jewelry

Mixed natural and synthetic gemstone cabochons and faceted stones; individual species cannot be determined reliably from this image

Red faceted gemstone jewelry setting

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

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Diamond (or Cubic Zirconia simulant)

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

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

Colorless faceted gemstone, likely cubic zirconia or diamond

Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond

Goldstone

Aventurine glass

Diamond (Baguette cut)

Carbon (C)

Aquamarine in Onyx / Blue Topaz Pendant

Beryl (Be₃Al₂Si₆O₁₈) or Topaz (Al₂SiO₄(F,OH)₂)

Mixed gemstone specimens

Likely pink sapphire or tourmaline, red garnet, blue sapphire, precious opal, and green tourmaline/emerald; exact identities cannot be confirmed from the collage

Smoky Quartz

Silicon Dioxide (SiO2)

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Magnetite or Hematite-rich Ore

Magnetite (Fe3O4) or Hematite (Fe2O3)

Ruby

Corundum (Al2O3 with Chromium trace impurities)

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Emerald

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