Synthetic Polymer (Synthetic Material)

Blue resin-coated or dyed stone cabochon

Likely dyed chalcedony/agate (microcrystalline quartz, SiO₂); exact material is uncertain from the image

Purple faceted gemstone, likely amethyst or synthetic colored corundum

Amethyst: quartz (SiO₂); possible alternative: purple corundum (Al₂O₃) or glass

Botryoidal hematite (specular hematite)

Hematite, Fe₂O₃

Lapis Lazuli

Lapis lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium

Man-made Jewelry Charm (Enameled Metal)

Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.

Pink faceted gemstone ring (stone unidentified)

Possibly pink tourmaline (elbaite); image alone cannot confirm the gem or whether it is natural

Blue Sapphire (in a faceted jewelry setting)

Corundum (Al2O3) with trace Iron and Titanium

Ruby

Corundum (Al2O3)

Ruby

Corundum (Al2O3 with Chromium)

Pearls (likely freshwater cultured pearls)

Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin

Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain

Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass

Amethyst stud earrings

Amethyst, purple quartz (SiO₂)

Polished pink quartz cabochon

Quartz (SiO₂), likely rose quartz or included quartz

Orange cabochon gemstone, likely amber or amber-like resin

Natural amber: fossilized plant resin (organic mineraloid), commonly succinite; exact identification requires testing

Ruby

Corundum (Al2O3 with Chromium traces)

Blue Sapphire

Corundum (Al2O3)

Tumbled Clear Quartz and Citrine Points

Silicon Dioxide (SiO2)

Red garnet (likely almandine or pyrope)

Garnet-group silicate; almandine Fe₃Al₂(SiO₄)₃ or pyrope Mg₃Al₂(SiO₄)₃

Green Obsidian Sphere (man-made glass)

Vitreous Silica with Chromium/Iron additives

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with Fe3+ impurities

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)

Emerald (green gemstone) pendant

Emerald, green variety of beryl (Be₃Al₂Si₆O₁₈); stones appear to be faceted and set in jewelry

Violet faceted gemstone, likely synthetic or simulant

Indeterminate from the image; possible violet sapphire (corundum, Al₂O₃), amethyst (quartz, SiO₂), or glass/another simulant

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Silicon

Crystalline Silicon (Si)

Clear gemstone earring (likely cubic zirconia)

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

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)

Lapis Lazuli

Lapis Lazuli (Rock composed chiefly of lazurite, calcite, and pyrite)

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

Diamond

Native Carbon (C)

Bismuth crystal

Bismuth (Bi), synthetic laboratory-grown crystal

Opalite

Synthetic Glass, SiO2 base with metallic inclusions

Faceted yellow gemstone, likely citrine

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

Polished amethyst cabochon

Amethyst, purple quartz (SiO₂)