Synthetic Polymer (Polylactic Acid)

Polished amber-like organic gemstone

Likely amber (fossilized plant resin), possibly copal or brown chalcedony; exact identification requires testing

Amber

Fossilized plant resin; chiefly polymerized terpenoid hydrocarbons (succinite when Baltic-type)

Polished amber-like organic gemstone

Amber (fossilized tree resin), commonly succinite; exact identification is uncertain from the image

Polished amber

Amber (fossilized plant resin; primarily organic polymerized terpenes)

Tumbled amber-like inclusion

Likely amber (fossilized tree resin; complex polymer), but identification is uncertain from the image

Amber (likely rough amber)

Fossilized plant resin; predominantly polymerized terpenoid resin (succinite if Baltic-type)

Amber

Succinite (Fossilized Tree Resin) - C10H16O

Blue aventurine quartz (likely)

Quartz, silicon dioxide (SiO₂), probably blue aventurine variety

Pink quartz (likely rose quartz)

Quartz, silicon dioxide (SiO₂), likely rose quartz; possibly lab-created or treated

Yellow faceted gemstone, likely citrine or synthetic glass

Citrine (quartz, SiO₂) is the leading natural possibility; visual identification is uncertain from the photograph

Green cabochon gemstone pendant, likely turquoise or dyed green turquoise

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

Blue Goldstone

Aventurine Glass (SiO2 with Co and metallic inclusions)

Emerald

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

Polished tiger’s-eye

Quartz variety, SiO₂, with crocidolite-derived iron inclusions

Faceted yellow-green gemstone, likely peridot

Olivine, typically forsterite-rich (Mg₂SiO₄)

Lapis Lazuli

Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Likely amethyst cabochon ring

Quartz, SiO₂; purple coloration from trace iron and irradiation

Hematite bead bracelet

Hematite (iron(III) oxide, Fe₂O₃), likely polished specular hematite

Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)

Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)

Lapis Lazuli

Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Strawberry Quartz and Rose Quartz

Silicon Dioxide (SiO2) with inclusions

Diamond (Faceted)

Diamond (Pure Carbon, C)

Purple diamond (rough gem-quality diamond)

Diamond, crystalline carbon (C)

Champagne topaz (likely)

Topaz, Al₂SiO₄(F,OH)₂

Gemstone jewelry ensemble

Likely mixed gemstone and glass-bead jewelry; exact stones cannot be determined from the image

Tumbled turquoise-like stone

Likely turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Pearls (likely freshwater cultured pearls)

Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin

Silicon

Element Si

Peridot gemstone pendant

Olivine, gem-quality forsteritic olivine (approximately (Mg,Fe)₂SiO₄)

Hematite

Iron(III) oxide (Fe2O3)

Goldstone

Avventurina (Cu + SiO2 glass)

Polished amber

Fossilized tree resin (primarily organic polymerized diterpenes)

Iridescent polished/tumbled stone (likely coated quartz or glassy synthetic material)

Indeterminate; possibly quartz (SiO₂) with an artificial iridescent coating

Ruby (Faceted)

Corundum (Al2O3 with Cr trace elements)

Diamond

Diamond (C)

Opal

Hydrated amorphous form of silica (SiO2·nH2O)

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Star ruby cabochon ring

Corundum, Al₂O₃ (ruby variety), displaying asterism

Polished amber cabochon pendant

Amber (fossilized plant resin), chiefly polymerized succinite; approximate formula C10H16O

Tumbled amber

Fossilized plant resin; commonly succinite (C10H16O)