Sedimentary (Imitation)

Pearl (in a decorative hair comb setting)

Calcium carbonate (CaCO3) primarily as Aragonite, bonded with Conchiolin

Pearl

Nacre (Aragonite and Conchiolin), CaCO3

Angelite

Anhydrite (Calcium Sulfate, CaSO4)

Polished green jade-like pendant

Likely nephrite jade (actinolite–tremolite amphibole); possibly serpentine or dyed green aventurine—image alone is inconclusive

Black jade or dark serpentine cabochon

Jadeite (NaAlSi₂O₆) or nephrite amphibole; possibly serpentine (Mg₃Si₂O₅(OH)₄)

Red faceted gemstone jewelry setting

Likely synthetic ruby or red spinel centerpiece with colorless accent stones; exact identification requires gemological testing

Pearl

Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3

White seed-bead gemstone strand, likely freshwater pearl or shell pearl

Pearl: nacreous calcium carbonate, chiefly aragonite (CaCO₃) in conchiolin; identification uncertain from image

Tumbled reddish-brown chalcedony, possibly carnelian

Chalcedony (microcrystalline quartz), SiO₂; red variety commonly called carnelian

Emerald

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

Likely citrine or yellow glass imitation in a silver-tone bracelet

Citrine: quartz, SiO₂; exact material cannot be confirmed visually

Lapidary Wax (imitation/wax model)

Hydrocarbon wax blend with colorant (imitating Lapis Lazuli/Emerald)

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH))

Green aventurine jade-style cabochon (likely dyed chalcedony or glass imitation)

Quartz/chalcedony, SiO₂; exact material is uncertain from the image

Jade (specifically Nephrite or Jadeite beads)

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Ruby (Faceted)

Corundum (Al2O3:Cr)

Probable amber fragment

Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)

Lemon Quartz (Orizaba/Citrinated Quartz)

Silicon Dioxide (SiO2) with iron impurities/treatment

Gemstone bead necklace (likely citrine or yellow quartz)

Quartz, SiO₂; precise identification is uncertain because the beads are blurred and metal settings obscure them

Turquoise (Dyed Howlite or Magnesite imitation)

Hydrated phosphate of copper and aluminum / CuAl6(PO4)4(OH)8·4H2O

Turquoise (Dyed Howlite/Magnesite)

CuAl6(PO4)4(OH)8·4H2O (Natural Turquoise) or Ca2B5SiO9(OH)5 (Howlite)

Pearl

Calcium carbonate (CaCO3) as Aragonite or Calcite

Sulfur (with possible Cullet Glass or Slag imitation)

Native Sulfur (S8)

Green Aventurine

Aventurine Quartz (SiO2) with Fuchsite inclusions

Green glassy mineral specimen, likely chromium-bearing fluorite (tentative)

Fluorite, CaF₂, possibly green fluorite; identification uncertain from image

Acrylic or Resin (Synthetic Imitation)

Polymethyl Methacrylate (PMMA) or Polyepoxide

Pearls

Pearl: biomineralized aragonite (CaCO₃) and conchiolin

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Amber

Succinite (specifically for Baltic amber; fossilized tree resin)

Red Coral

Corallium rubrum

Blue-green cabochon, likely chalcedony or treated glass imitation

Cryptocrystalline quartz (chalcedony/possibly chrysoprase); identification uncertain from image

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Ruby in Zoisite

Anyolite (Zoisite with Corundum)

Amber

Succinite (Resin)

Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation

SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)

Tumbled carnelian (reddish chalcedony)

Carnelian, a cryptocrystalline variety of quartz (SiO₂)

Pearl

Aragonite / Calcium Carbonate (CaCO3)

Black Onyx

Cryptocrystalline Quartz (SiO2)

Moonstone (specifically White Moonstone or Girasol Quartz)

Potassium aluminum silicate (KAlSi3O8)

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O

Tumbled carnelian agate

Cryptocrystalline chalcedony (SiO₂), an iron-colored variety of agate

Red Coral (Precious Coral)

Corallium rubrum (Calcium Carbonate, CaCO3)