Synthetic (Glass)

Smoky Quartz

Silicon Dioxide (SiO2)

Ruby (Rough/Raw)

Corundum (Al2O3:Cr)

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

Blue glassy mineral specimen, possibly dyed or synthetic

Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass

Small faceted gemstone, likely diamond

Diamond (crystalline carbon, C)

Blue-beaded gemstone jewelry, likely lapis lazuli or dyed blue agate

Uncertain from the image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or blue chalcedony (SiO₂)

Turquoise

Hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Green Fluorite (likely synthetic or heat-treated for jewelry)

Calcium Fluoride (CaF2)

Ruby (Raw Corundum)

Al2O3 (Aluminum Oxide)

Cubic Zirconia and Synthetic Ruby Jewelry

Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)

Diamond (or Diamond Simulant)

Carbon (C) if diamond, various if simulant

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation

Smoky Quartz

Silicon Dioxide (SiO2)

Emerald

Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium

Agate (Polished Sphere)

Silicon Dioxide (SiO2)

Diamond (or Cut Gemstone / Cubic Zirconia)

Carbon (C)

Amethyst ring

Amethyst, purple quartz (SiO₂), likely set with diamond or other accent stones

Sapphire

Corundum (Al2O3)

Goldstone

Avventurina (Cu + SiO2 glass)

Black onyx or black spinel ring stone

Likely chalcedony (SiO₂), variety black onyx; possibly synthetic spinel or glass

Faceted citrine-colored gemstone

Likely citrine (quartz, SiO₂); possibly yellow glass or synthetic gem

Colorless faceted gemstone, likely cubic zirconia

Synthetic cubic zirconia (ZrO₂), tentative; possibly diamond or synthetic moissanite

Blue gemstone, likely iolite or blue sapphire

Iolite (cordierite, Mg₂Al₄Si₅O₁₈) or corundum (sapphire, Al₂O₃)

Silicon

Element Si

Silicon Carbide (Carborundum)

Silicon Carbide, SiC

Amber (and Cubic Zirconia)

Fossilized Tree Resin

Note on Image Identification: Textile

N/A (Anthropogenic material)

Smoky Quartz

Silicon Dioxide (SiO2)

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Moonstone cabochon (probable)

Adularescent feldspar, usually orthoclase–albite intergrowth (KAlSi3O8–NaAlSi3O8)

Gold and Cubic Zirconia (San Judas Tadeo Pendant)

Native Gold (Au) with Synthetic Cubic Zirconia (ZrO2)

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

Probably turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; exact identification requires testing

Faceted glass-like gemstone (likely synthetic quartz or cubic zirconia)

Identification uncertain; possibilities include synthetic quartz (SiO₂) or cubic zirconia (ZrO₂)

Blue Topaz

Topaz [Al2SiO4(F,OH)2]

Smoky Quartz

Silicon Dioxide (SiO2)

Pink tourmaline (rubellite)

Elbaite tourmaline, lithium sodium aluminum borosilicate: Na(Li1.5Al1.5)Al6(BO3)3Si6O18(OH)4

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity cannot be confirmed from the glare-heavy image