Synthetic (Not A Natural Rock)

Smoky Quartz

Silicon Dioxide (SiO2)

Turquoise

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

The user-provided image does not contain a rock or mineral specimen

Possible weathered basalt or iron-rich slag

Basalt, tentatively; composition likely plagioclase and pyroxene with possible magnetite

Labradorite cabochon

Labradorite, a calcium-rich plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈

Ametrine

Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)

White cabochon gemstone, likely milky chalcedony or opalite

Chalcedony: microcrystalline quartz, SiO₂; appearance may also indicate synthetic opalite glass

Tumbled opalite (likely synthetic glass)

Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species

Pink faceted gemstone, likely synthetic cubic zirconia or pink sapphire

Uncertain from image; possible zirconium dioxide (cubic zirconia, ZrO₂) or corundum (pink sapphire, Al₂O₃)

Tumbled amethyst

Amethyst, purple quartz (SiO₂)

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Opalite

Synthetic Glass (Simulated Moonstone/Opal)

Dark, weathered stone—possibly basalt or slag

Indeterminate; likely fine-grained basalt (plagioclase–pyroxene)

Emerald

Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities

Black onyx or black spinel ring stone

Likely chalcedony (SiO₂), variety black onyx; possibly synthetic spinel or glass

Tumbled turquoise cabochon

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O

Blue-beaded gemstone jewelry, likely lapis lazuli or dyed blue agate

Uncertain from the image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or blue chalcedony (SiO₂)

Blue Sapphire

Corundum (Al2O3)

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Dyed Purple Agate Sliced Tablet

Silicon Dioxide (SiO2), variety Chalcedony

Black faceted gemstone, likely spinel or black tourmaline

Most plausibly black spinel (MgAl₂O₄); visually similar possibilities include schorl tourmaline (NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) or synthetic glass

Blue Goldstone

Synthetic glass with copper or cobalt/manganese inclusions

Colorless faceted gemstone, likely cubic zirconia or diamond

Uncertain from image; cubic zirconia (ZrO₂) is a common diamond simulant, while diamond is crystalline carbon (C)

Colorless faceted gemstone, likely glass or cubic zirconia

Probably cubic zirconia (zirconium dioxide, ZrO₂); diamond cannot be confirmed visually

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)

Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Synthetic Resin / Plastic Figurine

Synthetic Polymer (Copolymer of Polyethylene or Resin)

Iridescent polished/tumbled stone (likely coated quartz or glassy synthetic material)

Indeterminate; possibly quartz (SiO₂) with an artificial iridescent coating

Blue Opal Inlay (Simulated/Lab-created)

Hydrated Amorphous Silica (SiO2·nH2O) with polymer resin

Diamond-set ring (likely lab-grown or natural diamonds)

Diamond, crystalline carbon (C)

Purple faceted gemstone, likely amethyst or synthetic colored corundum

Amethyst: quartz (SiO₂); possible alternative: purple corundum (Al₂O₃) or glass

Tiger’s-eye

Chatoyant quartz (SiO₂), commonly pseudomorphic quartz after crocidolite

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Blue resin-coated or dyed stone cabochon

Likely dyed chalcedony/agate (microcrystalline quartz, SiO₂); exact material is uncertain from the image

Polished purple gemstone, likely amethyst

Amethyst: purple quartz, silicon dioxide (SiO₂)

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

Cultured Marble (Synthetic)

Polymer-matrix composite (typically calcium carbonate in polyester resin)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Smoky Quartz

Silicon Dioxide (SiO2)

Eroded Brick or Pumice-like Scoria

Vesicular Basalt / Scoria (Anthropogenic variant: Eroded Firebrick)