Sedimentary (Imitation)

Porcelain Tile (Sandstone-look)

Man-made Ceramic (resembling Quartz-rich Sandstone)

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Polished yellow jasper or opaque chalcedony bead

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

Hematite

Iron(III) oxide (Fe2O3)

Howlite

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)

Blue Howlite (Dyed)

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

Howlite (dyed)

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Howlite

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

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

Blue Opal Inlay (Simulated/Lab-created)

Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin

Lavender Jade and Snowy Quartz (Druzy)

NaAlSi2O6 (Jadeite) / SiO2 (Quartz)

Turquoise cabochon jewelry

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Turquoise (possible Howlite imitation)

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

Turquenite (Dyed Howlite)

Dyed Ca2B5SiO9(OH)5 (Calcium Borosilicate Hydroxide)

Diamond (or Clear Quartz / Cubic Zirconia)

Carbon (C) or Silicon Dioxide (SiO2) / Cubic Zirconia (ZrO2)

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Tumbled coral fragment (likely white calcitic coral)

Calcium carbonate, primarily aragonite or calcite (CaCO₃); exact coral genus cannot be determined from the image

Blue gemstone bead bracelet, likely lapis lazuli or dyed stone

Uncertain from image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or dyed quartz/glass imitation

Blue quartz-like mineral specimen

Likely quartz (SiO₂), possibly dyed or coated; exact identification requires testing

Chrysocolla and Malachite Beads

Hydrated copper silicates (Chrysocolla) and Copper carbonate hydroxide (Malachite)

Dyed Howlite (Purple)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Polished yellow-orange chalcedony (likely carnelian or yellow agate)

Microcrystalline quartz, SiO₂; chalcedony variety

Pearl (Imitation or Cultured)

Calcium Carbonate (Aragonite/Calcite) - CaCO3

Pearl

Pearl; primarily aragonite (CaCO₃) in nacre

Dyed Howlite (often sold as 'Turquenite')

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Dalmatian jasper

Orbicular microcrystalline quartz rock, commonly rhyolitic or volcanic-feldspar matrix with black arfvedsonite/alkali-amphibole inclusions

Green aventurine cabochon (likely)

Quartzite/aventurine quartz, predominantly SiO₂ with possible fuchsite mica

Pearl and Garnet Glass

Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Polished blue-black cabochon, likely blue obsidian or dyed glass-like stone

Indeterminate from image; possible natural obsidian (volcanic glass), commonly SiO₂-rich rhyolitic glass

Shungite

Non-crystalline carbonoid (Shungite)

Dyed blue howlite (turquoise imitation), possibly dyed magnesite

Howlite: Ca₂B₅SiO₉(OH)₅; the vivid blue color is artificial dye. Exact identification is uncertain from the photograph alone.

Onyx (Black Onyx)

Onyx (Silicon Dioxide, SiO2)

Carved red jasper bead (likely ceramic imitation)

Jasper, microcrystalline quartz (SiO₂); exact material uncertain from the image

Turquoise carving

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

Red Coral (Precious Coral)

Corallium rubrum (Calcium Carbonate, CaCO3)

Dyed Howlite

Borosilicate hydroxide (Ca2B5SiO9(OH)5)

Slag Glass

Amorphous Silica / Glass Slag

Dyed or treated turquoise-like tumbled stone

Likely turquoise (CuAl₆(PO₄)₄(OH)₈·4H₂O), though blue-green magnesite or howlite imitation is possible