Sedimentary (Imitation)

Porcelain Tile (Sandstone-look)

Man-made Ceramic (resembling Quartz-rich Sandstone)

Dyed Magnesite (or Howlite)

Magnesium carbonate (MgCO3) / Calcium borosilicate hydroxide

Dyed howlite or magnesite cabochon

Howlite, Ca₂B₅SiO₉(OH)₅; commonly dyed vivid blue to imitate turquoise

Orange cabochon ring

Possibly carnelian (microcrystalline quartz, SiO₂); identification from the photograph is uncertain.

Amber

Fossilized tree resin; predominantly polymerized terpenoid compounds (succinite)

Faceted clear gemstone, likely glass or cubic zirconia

Undetermined; could be synthetic cubic zirconia (ZrO₂) or cut glass (silica-based)

Amber-colored bead earrings

Likely amber (fossilized tree resin); material cannot be confirmed from the image

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Tumbled howlite (likely)

Howlite, Ca₂B₅SiO₉(OH)₅

Hematite

Iron(III) oxide (Fe2O3)

Howlite

Ca2B5SiO9(OH)5

Amber (possibly a small polished amber cabochon)

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

Goldstone (brown goldstone)

Man-made aventurine glass, typically copper-bearing silica glass

Opal ring

Precious opal, hydrated amorphous silica (SiO₂·nH₂O), set in a metal ring

Dark cabochon gemstone, likely labradorite

Labradorite, plagioclase feldspar (approximately NaAlSi₃O₈–CaAl₂Si₂O₈)

Polished yellow jasper or opaque chalcedony bead

Microcrystalline quartz (SiO₂), likely iron-oxide-stained jasper

Dyed turquoise-like gemstone beads

Likely turquoise (hydrous copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O), possibly dyed howlite or magnesite

Carved red coral bead (likely coral or coral-colored resin)

Corallium spp. (precious coral; calcium carbonate, CaCO₃)

Blue Howlite (Dyed)

Dyed Howlite (Calcium Borosilicate Hydroxide, Ca2B5SiO9(OH)5)

Red jasper (possible polished or dyed stone)

Jasper, an opaque microcrystalline variety of quartz (SiO₂)

Howlite

Howlite (hydrated calcium borosilicate; Ca₂B₅SiO₉(OH)₅)

Howlite

Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)

Dyed blue tumbled stone, likely turquoise or howlite

Most likely dyed magnesite/howlite (CaCO₃), possibly turquoise (hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O)

Howlite

Howlite (calcium borosilicate hydroxide; Ca2B5SiO9(OH)5)

Pearl

Calcium carbonate with conchiolin (CaCO3)

Diamond-set earring

Diamond (carbon, C); crystal structure: cubic

Howlite (dyed)

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Amber (likely a small rough amber piece)

Fossilized plant resin; amber is an organic mineraloid, not a crystalline mineral

Dyed howlite (turquoise imitation)

Howlite, Ca₂B₅SiO₉(OH)₅; commonly blue-dyed

Turquoise-style beaded bracelet

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly dyed or composite beads

White howlite (likely carved or shaped)

Howlite, Ca₂B₅SiO₉(OH)₅

Turquoise and coral bead necklace

Turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O; coral: chiefly CaCO₃ (aragonite or calcite)

Gemstone-inlaid bracelet, likely lapis lazuli or dyed howlite

Unconfirmed blue cabochons; lapis lazuli is a rock composed mainly of lazurite, while howlite is Ca₂B₅SiO₉(OH)₅

Inlaid stone ring (likely jasper or agate)

Likely microcrystalline quartz (chalcedony, SiO₂), possibly jasper, with decorative mineral inlays

Hematite cameo or hematine imitation

Hematite (Fe₂O₃); possibly synthetic hematine or black glass

Dyed turquoise-colored howlite or magnesite (likely imitation turquoise)

Howlite: Ca₂B₅SiO₉(OH)₅; magnesite: MgCO₃

Blue Opal Inlay (Simulated/Lab-created)

Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin

Pearl necklace

Pearl—biogenic calcium carbonate, primarily aragonite (CaCO₃)

Red gemstone ring, possibly synthetic ruby or red glass

Unidentified red stone; ruby is corundum (Al₂O₃), but the image cannot confirm its identity

Likely polished blue-green stone bead or small gemstone

Uncertain from the photo; possibly dyed or treated agate/chalcedony, but identification requires testing

Tumbled green gemstone, likely dyed howlite or serpentine

Most consistent with dyed howlite (Ca2B5SiO9(OH)5); exact identification requires testing

Faceted Diamond / Moissanite / Cubic Zirconia

Carbon (C) if Diamond, Silicon Carbide (SiC) if Moissanite