Sedimentary (Imitation)

Tumbled amber (likely copal or imitation amber)

Amber: fossilized tree resin, chiefly polymerized diterpenes; copal is younger, incompletely polymerized resin

Lapidary Wax (imitation/wax model)

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

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

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

Pearl-embellished decorative cross

Pearl (biogenic calcium carbonate, predominantly aragonite) with rhinestone-mounted glass or synthetic gemstones

Howlite

Howlite (Ca₂SiB₅O₉(OH)₅)

Pearl (in Marcasite Jewelry)

Biogenic Calcium Carbonate (primarily Aragonite, CaCO3)

Clear faceted gemstone in a metal jewelry setting (likely imitation glass or cubic zirconia)

Unidentified transparent faceted stone; possibly cubic zirconia (ZrO₂) or glass

Clear quartz beads (likely rock crystal)

Quartz, silicon dioxide (SiO₂)

Tumbled amber-like material

Amber (fossilized tree resin; chiefly polymerized diterpenoid resin)

Turquoise

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

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

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

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass

Blue cabochon ring stone, likely sapphire or synthetic blue corundum

Corundum (Al₂O₃), possibly chromium/iron-titanium-bearing sapphire

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

Red coral beads

Precious coral, commonly Corallium rubrum (calcium-carbonate skeleton)

Green aventurine (tumbled)

Quartz, SiO₂, with fuchsite or other mica inclusions

Yellow-orange amber

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

Tumbled amber-colored chalcedony or quartz

Microcrystalline quartz, SiO₂; possibly iron-stained chalcedony or quartzite

Green jade bead necklace

Most likely nephrite jade (a tough, interlocking amphibole aggregate; commonly tremolite–actinolite), though jadeite jade or dyed serpentine is possible from the image alone.

Tahitian black pearl strand

Cultured pearl; aragonite (CaCO₃) nacre

Polished carnelian agate (likely dyed or heat-treated)

Microcrystalline quartz, chiefly chalcedony; SiO₂

Turquoise cabochon ring

Turquoise, hydrated copper aluminum phosphate (CuAl₆(PO₄)₄(OH)₈·4H₂O); the stones may be stabilized or treated

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Turquoise

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

Green aventurine crystal point

Quartz (silicon dioxide, SiO₂), likely aventurine variety colored by fuchsite mica

Black onyx or black agate bead necklace

Microcrystalline quartz, SiO₂ (likely chalcedony/black agate; possibly dyed)

Tumbled carnelian (reddish chalcedony)

Carnelian, a cryptocrystalline variety of quartz (SiO₂)

Blue turquoise cabochon

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; likely dyed or stabilized, flower-shaped polished piece

Beaded gemstone jewelry (likely amethyst, lapis lazuli, and pearl or glass imitation)

Mixed mineral beads; possible quartz (SiO₂) and lazurite-bearing lapis lazuli

Pearl

Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)

Pearl (in a decorative hair comb setting)

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

Pearl

Nacre (Aragonite and Conchiolin), CaCO3

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

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

Red coral earrings

Corallium rubrum or related precious coral (calcareous coral skeleton; primarily aragonite, CaCO₃)

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Amber

Succinite (specifically for Baltic amber; fossilized tree resin)

Red cabochon ring, likely ruby or synthetic ruby

Corundum (Al₂O₃), possibly chromium-bearing ruby; the image cannot establish whether it is natural or synthetic

Carved translucent jade pendant

Likely nephrite jade (actinolite–tremolite series); possibly jadeite or chalcedony, identification requires testing

Polished orange chalcedony or carnelian

Cryptocrystalline quartz (SiO₂), likely carnelian