Synthetic (Not A Rock Or Mineral)

Pink amethyst or pale pink quartz gemstone

Quartz, SiO₂; pink coloration may result from microscopic inclusions or irradiation-related defects

Raw Topaz

Aluminum Silicate Fluoride Hydroxide, Al2SiO4(F,OH)2

Blue Goldstone

Aventurine Glass

Ruby

Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)

Grass (Organic Matter/Soil)

Poaceae (family of monocotyledonous flowering plants)

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Emerald

Beryl (Be3Al2(SiO3)6) with trace Chromium/Vanadium

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Tiger’s-eye

Chatoyant quartz (SiO₂), commonly pseudomorphic quartz after crocidolite

Sapphire (Blue)

Corundum (Al2O3)

White Sapphire

Corundum (Al2O3)

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

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

Blue aventurine quartz (likely)

Quartz, silicon dioxide (SiO₂), probably blue aventurine variety

Hematite

Iron(III) oxide (Fe2O3)

Ruby

Corundum (Al2O3 with Chromium traces)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Hematite bead bracelet

Hematite (iron(III) oxide, Fe₂O₃), likely polished specular hematite

Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)

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

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Strawberry Quartz and Rose Quartz

Silicon Dioxide (SiO2) with inclusions

Opalite-style pendant (likely synthetic glass, not natural opal)

Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)

Pink tourmaline (rubellite)

Elbaite tourmaline, lithium sodium aluminum borosilicate: Na(Li1.5Al1.5)Al6(BO3)3Si6O18(OH)4

Clear faceted gemstone in a gold-colored setting

Likely colorless quartz (rock crystal) or synthetic cubic zirconia; visual identification is inconclusive

Hematite

Iron(III) oxide (Fe2O3)

Pink quartz (likely rose quartz)

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

Blue Goldstone

Aventurine Glass (SiO2 with Co and metallic inclusions)

Rough Emerald (Beryl)

Emerald (Be3Al2(SiO3)6 with Cr/V impurities)

Diamond

Carbon (C)

Rose Quartz

Silicon Dioxide (SiO2)

Amethyst ring

Amethyst, purple quartz (SiO₂), likely set with diamond or other accent stones

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Lapis Lazuli

Lapis lazuli (complex rock; primarily Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Synthetic Resin (Artificial Specimen)

Polyurethane or Polyester Resin

Polished tiger’s-eye

Quartz variety, SiO₂, with crocidolite-derived iron inclusions

Turquoise cabochon jewelry

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

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Lapis Lazuli

Complex mixture of minerals, primarily Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2