Gemstone

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Garnet Schist

Almandine Garnet in Schist (X3Al2(SiO4)3)

Diamond

Carbon (C)

Petrified Wood

Silicified wood (primarily Silicon Dioxide, SiO2)

Dragon Stone (Dragon Blood Jasper)

Epidote with Pietersite or Red Jasper inclusions (varied SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Beaded gemstone bracelet, likely amethyst and mixed polished stones

Amethyst: quartz (SiO₂); other beads appear to be assorted quartz/chalcedony or jasper

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond

Amber (possibly a small polished amber cabochon)

Fossilized tree resin; amber is an organic gemstone, not a mineral

Chrysoprase

Silicon Dioxide (Chalcedony), SiO2

Emerald and Diamond Ring

Beryl (Be3Al2(SiO3)6) and Carbon (C)

Emerald

Beryl (Be3Al2(SiO3)6)

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Diamond-set gold ring

Diamond (carbon, C) in a gold-alloy setting; the stone may be a diamond or a diamond simulant

Green jade cabochon ring

Possibly jadeite (NaAlSi₂O₆) or nephrite (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂); the image is insufficient to distinguish them

Tumbled aquamarine (likely)

Aquamarine, blue-green variety of beryl (Be₃Al₂Si₆O₁₈)

Polished tiger’s-eye

Quartz variety with fibrous crocidolite-derived inclusions; chiefly SiO₂

Blue-green opal, likely polished common or synthetic opal

Opal (hydrated amorphous silica, SiO₂·nH₂O); identification from the image is uncertain

Tiger’s eye pendant

Quartz (SiO₂) with parallel crocidolite-derived fibers; commonly called tiger’s eye

Pink opal bead bracelet with carved crescent charm

Common opal (hydrated amorphous silica, SiO₂·nH₂O); the charm’s material is uncertain from the image

Imperial Topaz

Al2SiO4(F,OH)2

Green Onyx

Chalcedony (SiO2)

Emerald

Beryl (Be3Al2(SiO3)6)

Emerald

Beryl (Be3Al2(SiO3)6)

Emerald in Matrix

Beryllium Aluminum Silicate (Be3Al2(SiO3)6)

Fire Agate

Silicon Dioxide (Chalcedony with Limonite inclusions), SiO2

Aquamarine

Beryllium Aluminum Silicate, Be3Al2(SiO3)6

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Bloodstone

Chalcedony quartz variety Heliotrope (SiO2)

Emerald

Beryl (Be3Al2(SiO3)6)

Aquamarine

Beryl (Be3Al2(SiO3)6)

Moonstone (Feldspar)

Orthoclase Feldspar KAlSi3O8 / Albite NaAlSi3O8

Peridotite (Olivine/Peridot)

Peridotite (comprising (Mg,Fe)2SiO4)

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Moonstone

Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)

Mounted faceted gemstone ring

Likely diamond (carbon, C), though the image is insufficient for definitive identification

Faceted brown gemstone pendant, likely smoky quartz or champagne topaz

Probably quartz (SiO₂), smoky variety; alternatively topaz (Al₂SiO₄(F,OH)₂)

Ruby-set gold ring

Ruby (corundum), Al₂O₃ colored red by chromium; mounted in a gold alloy

Baroque cultured pearl necklace

Pearl: nacre composed mainly of aragonite (CaCO₃) and conchiolin

Faceted yellow gemstone ring

Likely yellow sapphire (corundum), but exact identification requires testing; alternatives include citrine, chrysoberyl, or treated diamond.

Green Tourmaline

Elbaite (part of Tourmaline group), Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4