Synthetic (Glass)

Anthropogenic Heat Source (Electronic/Industrial Interface)

Thermal IR emission (Electronic infrastructure)

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Diamond (or Cubic Zirconia simulant)

Carbon (C) / Zirconium Dioxide (ZrO2)

Emerald

Beryl (Be₃Al₂Si₆Oထ₈) with Chromium/Vanadium impurities

Synthetic Marbled Aggregate (Footwear Component)

Ethylene-vinyl acetate (Croslite™)

Blue chalcedony cabochon (probable)

Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)

Ruby

Corundum (Al2O3 with Chromium traces)

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)

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Cubic Zirconia (CZ)

Cubic Zirconium Dioxide (ZrO2)

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

Synthetic Ruby (Jewel Bearings)

Synthetic Corundum (Al2O3 doped with Chromium)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Red faceted gemstone, possibly ruby (identification uncertain)

Ruby, if natural: corundum (Al₂O₃) colored by chromium

Dyed Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Polished blue chalcedony or glass-like quartz specimen

Chalcedony (microcrystalline SiO₂), possibly treated or synthetic; exact identification requires testing

Clear gemstone earring (likely cubic zirconia)

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

Smoky Quartz

Silicon Dioxide (SiO2)

Red Agate (Carnelian)

Silicon Dioxide (SiO2)

Carnelian

Carnelian (Cryptocrystalline Quartz, SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Blue faceted gemstone, likely synthetic sapphire or blue spinel

Corundum (Al₂O₃) if sapphire; alternatively magnesium aluminate spinel (MgAl₂O₄)

Gemstone stud earrings, likely set with clear stones

The stones may be diamond (carbon, C) or colorless cubic zirconia (ZrO₂); the image is insufficient to distinguish them.

Cubic Zirconia (Set in Jewelry)

Zirconium Dioxide (ZrO2)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Ruby

Corundum (Al2O3)

Smoky Quartz

Silicon Dioxide (SiO2)

Opal ring (likely precious opal)

Hydrated amorphous silica, SiO₂·nH₂O; the pictured stone may be natural opal or a lab-created/imitation opal

Opal gemstone pendant

Opal (hydrated amorphous silica, SiO₂·nH₂O)

Iridescent coated quartz (likely synthetic/display gemstone)

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

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Diamond

Diamond (C - Pure Carbon)

Opal ring

Precious opal, hydrated amorphous silica (SiO₂·nH₂O), set in a metal ring

Hematite

Iron(III) oxide (Fe2O3)

Lapidary Wax (imitation/wax model)

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

Hematite bead bracelet

Hematite (Fe₂O₃), likely polished or magnetically enhanced beads

Limonite (Iron Ore)

Limonite; FeO(OH)·nH2O

Ruby (varietal of Corundum)

Corundum (Al2O3:Cr)

Coal (Bituminous or Anthracite)

Carbonaceous Sedimentary Rock

Rough Ruby

Corundum (Al2O3 with Chromium impurities)