Sedimentary (Synthetic)

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Blue sapphire ring

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

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire

Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material

Opalite (a synthetic glass)

Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant

Colorless faceted gemstone, likely glass or cubic zirconia

Probably cubic zirconia (zirconium dioxide, ZrO₂); diamond cannot be confirmed visually

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Anthropogenic Heat Source (Electronic/Industrial Interface)

Thermal IR emission (Electronic infrastructure)

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Blue Sapphire (Synthetic or Man-made Glass Imitation)

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

Diamond (or Cubic Zirconia simulant)

Carbon (C) / Zirconium Dioxide (ZrO2)

Emerald

Beryl (Be₃Al₂Si₆Oထ₈) with Chromium/Vanadium impurities

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Synthetic Marbled Aggregate (Footwear Component)

Ethylene-vinyl acetate (Croslite™)

Blue Goldstone

Aventurine Glass

Red cabochon ring, likely ruby or synthetic ruby

Corundum (Al₂O₃), possibly chromium-bearing ruby; the image cannot establish whether it is natural or synthetic

Hematite bead strand

Hematite, α-Fe₂O₃ (iron(III) oxide)

Faceted citrine-colored gemstone (likely synthetic/display stone)

Quartz, SiO₂, if natural citrine; possibly synthetic sapphire or glass imitation

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Blue Sapphire

Corundum (Al2O3)

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

Ruby

Corundum (Al2O3 with Chromium traces)

Opalite

Synthetic Glass (Hydrated Silica Simulant)

Blue Goldstone

Synthetic glass with cobalt and copper inclusions

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Opalite

Synthetic Fluorescent Glass (SiO2 + impurities)

Synthetic Ruby (Jewel Bearings)

Synthetic Corundum (Al2O3 doped with Chromium)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Cat's Eye Moonstone (Simulated/Synthetic or natural Cat's Eye Quartz/Glass)

There is no single scientific name. The appearance suggests either: Moonstone (feldspar group), Cat's Eye Quartz (SiO2), Apatite (Ca5(PO4)3(F,Cl,OH)), or most likely a synthetic material such as Fiber Optic Glass or 'Opalite' (a type of glass).

Dyed Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Pink corundum (likely synthetic or treated sapphire)

Corundum, Al₂O₃; pink coloration commonly from chromium or treatment

Colorless Gemstone (possibly Diamond or Cubic Zirconia)

C (Diamond) or ZrO2 (Cubic Zirconia)

Pearl and Garnet Glass

Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass

Rough Emerald (Beryl)

Emerald (Be3Al2(SiO3)6 with Cr/V impurities)

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, ZrO₂ (synthetic zirconium dioxide); possibly synthetic glass or lab-grown diamond

Faceted color-change gemstone, likely synthetic alexandrite or glass imitation

Alexandrite: chrysoberyl, BeAl₂O₄; exact identification requires gemological testing

Blue glass-like bead or gemstone keychain ornament

Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image

Pink-red faceted gemstone, possibly synthetic corundum or spinel

Uncertain; possible ruby (corundum, Al₂O₃) or red spinel (MgAl₂O₄)

Red corundum (ruby) crystal fragment

Corundum, Al₂O₃; ruby is red corundum colored mainly by chromium

Red Agate (Carnelian)

Silicon Dioxide (SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)