Mineral (Synthetic Glass)

Emerald (cut gemstone)

Beryl, Be₃Al₂Si₆O₁₈, colored green mainly by chromium and/or vanadium

Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)

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

Faceted Diamond or Cubic Zirconia

Carbon (C) for Diamond; Zirconium dioxide (ZrO2) for CZ

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

Blue cabochon gemstone, likely synthetic glass or dyed stone

Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli

Labradorite cabochon

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

Amethyst ring

Amethyst, purple quartz (SiO₂)

Green aventurine bead (likely)

Quartz, SiO₂, with green fuchsite inclusions

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Pink amethyst or pale pink quartz gemstone

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

Yellow faceted gemstone, likely citrine or synthetic glass

Citrine (quartz, SiO₂) is the leading natural possibility; visual identification is uncertain from the photograph

Goldstone (Synthetic Aventurescence Glass)

Cuprous Aventurescent Glass (Silicon Dioxide with Copper inclusions)

Faceted glass-like gemstone (likely synthetic quartz or cubic zirconia)

Identification uncertain; possibilities include synthetic quartz (SiO₂) or cubic zirconia (ZrO₂)

Opalite

Man-made opalescent glass

Faceted colorless gemstone, likely glass or diamond imitation

Unidentified; possibly diamond (carbon, C) or cubic zirconia (zirconium dioxide, ZrO₂)

Smoky Quartz

Silicon Dioxide (SiO2)

Amethyst ring

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

Moonstone cabochon (probable)

Adularescent feldspar, usually orthoclase–albite intergrowth (KAlSi3O8–NaAlSi3O8)

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

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

Blue Sandstone

Man-made glass with cobalt and copper inclusions

Sapphire (Blue)

Corundum (Al2O3)

Tumbled Clear Quartz and Citrine Points

Silicon Dioxide (SiO2)

Silicon

Crystalline Silicon (Si)

Sapphire

Corundum (Al2O3)

Opalite

Synthetic Glass, SiO2 base with metallic inclusions

Green Fluorite (likely synthetic or heat-treated for jewelry)

Calcium Fluoride (CaF2)

White Sapphire

Corundum (Al2O3)

Ruby (Raw Corundum)

Al2O3 (Aluminum Oxide)

Red faceted gemstone, likely synthetic ruby

Corundum (Al₂O₃); ruby when red, possibly laboratory-grown

Faceted citrine-colored gemstone

Likely citrine (quartz, SiO₂); possibly yellow glass or synthetic gem

Polished tiger’s-eye

Quartz variety, SiO₂, with crocidolite-derived iron inclusions

Citrine

Citrine (Silicon Dioxide, SiO2)

Rainbow Hematite / Magnetic Hematite

Iron oxide (Fe2O3) - often synthetic/coated for beads

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Pink tourmaline (rubellite)

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

Blue Goldstone

Synthetic glass with copper or cobalt/manganese inclusions

Faceted red gemstone, likely synthetic ruby or red spinel

Possibly corundum (Al₂O₃, ruby) or spinel (MgAl₂O₄); identity cannot be confirmed from the image

Blue resin-coated or dyed stone cabochon

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

Faceted Clear Gemstone (Likely Quartz or Cubic Zirconia)

Silicon Dioxide (SiO2) or Zirconium Dioxide (ZrO2)

Blue Goldstone

Auraventurine (Synthetic glass with cobalt and copper inclusions)

Blue gemstone ring, likely sapphire

Corundum, Al₂O₃ (probable blue sapphire); surrounding stones may be diamonds or simulants

Pink/red faceted gemstone, likely synthetic corundum or glass imitation

Corundum (Al₂O₃), ruby/sapphire variety; exact identification requires testing