Synthetic (Not A Natural Rock)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Pink quartz (likely rose quartz)

Quartz, silicon dioxide (SiO₂), likely rose quartz; possibly lab-created or treated

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (zirconium dioxide, ZrO₂) or synthetic glass

Quartz pebble in concrete

Quartz (SiO₂), embedded in Portland-cement concrete

Diamond (or Cubic Zirconia simulant)

Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ

Blue sapphire (likely synthetic or treated corundum)

Corundum, aluminum oxide (Al₂O₃), blue from iron and titanium impurities

Iridescent coated quartz (likely synthetic/display gemstone)

Quartz, silicon dioxide (SiO₂), likely faceted and surface-coated; exact material cannot be confirmed visually

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Smoky Quartz

Silicon Dioxide (SiO2)

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

River Stone (likely Siltstone or fine-grained Sandstone)

Clastic Sedimentary Rock (Lithic Wacke / Siltstone)

Green faceted bead strand, likely dyed or synthetic material

Uncertain; possibly green-dyed quartz, glass, or lab-created emerald-like material

Blue sapphire

Corundum (Al₂O₃), blue variety colored mainly by iron and titanium

Synthetic opal cabochon/bead

Opal-like hydrated amorphous silica; likely lab-created polymer–silica opal or Gilson synthetic opal (SiO₂·nH₂O)

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Blue Sapphire

Corundum (Al2O3)

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity cannot be confirmed from the glare-heavy image

Green cabochon gemstone, likely glass-filled or synthetic emerald imitation

Uncertain; possible synthetic emerald (beryl, Be₃Al₂Si₆O₁₈) or green glass

Decorative gemstone bracelet or jewelry

Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads

Diamond-set gold ring

Diamond (crystalline carbon, C) set in a gold alloy; the metal and setting are manufactured

Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)

Silicon Dioxide (SiO2) with inclusions/dye

Opalite crescent pendant

Opalite (man-made opalescent glass; not a natural mineral)

Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain

Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass

Emerald (green gemstone) pendant

Emerald, green variety of beryl (Be₃Al₂Si₆O₁₈); stones appear to be faceted and set in jewelry

Cubic Zirconia (CZ)

Zirconium dioxide (ZrO2)

Green cabochon gemstone, possibly peridot

Uncertain from the photo; possible gem-quality olivine, (Mg,Fe)₂SiO₄

Opal gemstone pendant

Opal (hydrated amorphous silica, SiO₂·nH₂O)

River Stone (likely Quartzite or Chert)

Sedimentary rock composed of Silicon Dioxide (SiO2)

Faceted citrine-colored gemstone (likely synthetic/display stone)

Quartz, SiO₂, if natural citrine; possibly synthetic sapphire or glass imitation

Blue faceted gemstone, likely sapphire

Corundum (Al₂O₃), likely blue sapphire; identity cannot be confirmed from the photograph alone

K2 Stone (or K2 Jasper)

Azurite-in-Granite (Potassium Feldspar, Quartz, Plagioclase, Muscovite, and Azurite)

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

Diamond (Baguette cut)

Carbon (C)

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Greenstone / serpentinite carving

Serpentinite, chiefly serpentine-group minerals (antigorite, lizardite, or chrysotile); exact identification requires testing

Lapidary Wax (imitation/wax model)

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

Imitation or Cultured Pearl Earrings

Calcium carbonate (CaCO3) or synthetic polymer/glass

Diamond (or synthetic simulant)

Cubic C (Carbon)

Mixed gemstone jewelry collection

Various gemstone minerals, including likely amethyst (quartz), sapphire or iolite, garnet, pearl, turquoise, and colored beryl or tourmaline

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)