Gemstone

Diamond

Native Carbon (C)

Jasper

Silicon dioxide (SiO2)

Smoky Quartz with Rutile Inclusions

Silicon Dioxide (SiO2) with TiO2 needles

Gemstone butterfly brooch/pendant

Likely faceted pink tourmaline or synthetic spinel in gilt metal; exact identification requires testing

Faceted clear gemstone ring, likely white sapphire or diamond

Unidentified colorless gemstone; diamond (C) or sapphire (Al₂O₃) cannot be distinguished from the image

Blue-green faceted gemstone, possibly glass or synthetic material

Not identifiable from the image; possible synthetic spinel or glass

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Turquoise and Red Coral (with Grizzly Bear Claw)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Precious Coral (Corallium rubrum)

Emerald (or possibly Green Glass / Slag)

Beryl (Be3Al2(SiO3)6)

Raw Citrine Quartz

Silicon Dioxide (SiO2)

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Rhodochrosite

Manganese Carbonate (MnCO3)

Amber

Succinite (organic gemstone, approx. C10H16O)

Pearl

Organic gemstone (Calcium carbonate - CaCO3)

Amber (Rough Baltics/Beach Specimen)

Succinicum (Organic Gemstone - Fossilized Resin)

Clear Quartz (Faceted) / White Sapphire / Goshenite

Silicon Dioxide (SiO2) / Aluminium Oxide (Al2O3)

Garnet in Matrix

Almandine/Grossular Garnet in Pegmatite or Schist

Garnet

Garnet Group (Silicate Minerals)

Spiny Oyster Shell

Spondylus (Calcium Carbonate, CaCO3)

Amber

Succinates (Fossilized Tree Resin)

Possibly a polished pale-green gemstone cabochon (likely aquamarine or fluorite)

Undetermined from the image; aquamarine is blue-green beryl (Be₃Al₂Si₆O₁₈), while fluorite is CaF₂

Yellow Sapphire

Corundum (Al2O3)

Polished leopard-skin jasper (likely feldspar-rich decorative stone)

Trade name: leopard-skin jasper; appearance may also fit a feldspar-rich rock such as larvikite or gabbro

Jasper

Silicon dioxide (SiO2) with impurities

Diamond (or Simulant)

Carbon (C)

Diamond-set gold ring

Diamond (carbon, C; cubic crystal structure), set in a gold alloy

Yellow-green rough stone, possibly serpentine

Tentatively serpentine-group rock (serpentine minerals; composition and identity cannot be confirmed from the image)

Red gemstone ring, likely synthetic ruby or garnet

Ruby: corundum (Al₂O₃); possible alternative: almandine garnet (Fe₃Al₂(SiO₄)₃)

Weathered granitic or metamorphic rock fragment

Indeterminate; likely quartz–feldspar–mica-bearing granitoid or gneiss

Opalite

Synthetic glass / Opalized glass

Blue Topaz

Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2)

Cat's Eye Moonstone (Feldspar)

Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8) inclusions

Green Quartz (Prasiolite)

Crystalline Silicon Dioxide (SiO2)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Jasper

Silicon dioxide (SiO2) with iron inclusions

Faceted pale-yellow gemstone, possibly citrine

Unidentified transparent gemstone; citrine is quartz (SiO₂)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O

Emerald in Host Rock

Beryl (Be3Al2Si6O18) containing Chromium and/or Vanadium

Cubic Zirconia and Synthetic Ruby Jewelry

Cubic Zirconia (ZrO2) and Synthetic Corundum (Al2O3)

Sunstone

(Ca,Na)((Al,Si)2Si2)O8 (Plagioclase Feldspar)

Quartz

Silicon Dioxide (SiO2)