Synthetic (Not A Rock Or Mineral)

Faceted glass-like gemstone object

Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image

Cubic Zirconia (Jewelry Setting)

Zirconium Dioxide (ZrO2)

Clear faceted gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); visual identification is uncertain because the stone is heavily faceted and photographed with flash

Tumbled blue-green stone, possibly aquamarine or chalcedony

Indeterminate from image; possibilities include beryl (Be₃Al₂Si₆O₁₈) or cryptocrystalline quartz (SiO₂)

Colorless faceted gemstone (likely cubic zirconia)

Cubic zirconia, zirconium dioxide (ZrO₂); possibly synthetic quartz or glass imitation

Kyanite-rich schist (probable)

Kyanite-bearing quartz–mica schist; kyanite, Al₂SiO₅

Druzy Quartz on Sandstone

Silicon Dioxide (SiO2) with Quartz Crystals on Clastic Sedimentary Rock

Opalite

Synthetic Opalite Glass / Opalized Glass

Citrine

Silicon Dioxide (SiO2)

Garden Quartz (Lodalite)

Silicon Dioxide with various mineral inclusions (SiO2)

Loose faceted colorless gemstones, likely quartz or glass-like mineral chips

Most consistent with quartz (SiO₂), though the photograph cannot exclude synthetic cubic zirconia or glass

Cubic Zirconia (Faceted)

Zirconium dioxide (ZrO2)

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂); visual confirmation is unavailable

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Purple faceted gemstone, possibly amethyst

Unconfirmed from image; if amethyst, quartz (SiO₂)

Faceted black gemstone, likely black spinel

Spinel (MgAl₂O₄); identification from the image is uncertain

Red-and-green jasper

Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides and possibly chlorite/epidote

Faceted clear gemstone in a gold-colored ring

Unidentified colorless faceted gem; possibly quartz, glass, or another transparent gem material

Faceted clear gemstone in a gold-colored setting

Unidentified transparent faceted stone; possibly quartz, glass, or another colorless gem

Desert rose gypsum

Gypsum (CaSO₄·2H₂O), forming rosette aggregates with sand inclusions

Moissanite

Silicon Carbide (SiC)

Chert (likely chalcedony-rich flint)

Microcrystalline quartz, SiO₂ (quartz/chalcedony)

Smoky Quartz

Silicon Dioxide (SiO2)

Cat's Eye Moonstone (Simulated/Synthetic or natural Cat's Eye Quartz/Glass)

There is no single scientific name. The appearance suggests either: Moonstone (feldspar group), Cat's Eye Quartz (SiO2), Apatite (Ca5(PO4)3(F,Cl,OH)), or most likely a synthetic material such as Fiber Optic Glass or 'Opalite' (a type of glass).

Gemstone Ring

Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)

Cowrie shell

Marine gastropod shell; likely a cowrie (family Cypraeidae), species not identifiable from the image

Red corundum (ruby) crystal fragment

Corundum, Al₂O₃; ruby is red corundum colored mainly by chromium

Bornite (“peacock ore”), likely weathered copper sulfide

Bornite, Cu₅FeS₄; possibly chalcopyrite, CuFeS₂, with iridescent tarnish

Opalite (Man-made Glass)

Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)

Lapis Lazuli

Lapis lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Mixed gemstone jewelry collection

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

Blue Sapphire

Corundum (Al2O3)

Chalcanthite (Likely Synthetic/Lab-Grown)

Hydrated copper(II) sulfate (CuSO4·5H2O)

Vesicular basalt (scoriaceous basalt)

Basalt; predominantly plagioclase, clinopyroxene, and olivine with iron oxides

Mounted clear gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂), synthetic; exact stone cannot be confirmed from the image

Opalite

Man-made Glass (SiO2 + additives)

Possible iron-rich nodule or weathered ironstone

Limonite/goethite-rich concretion; commonly represented as FeO(OH)·nH₂O with iron oxides

Blue Goldstone

Man-made glass with crystalline copper/cobalt inclusions

Metal Chain Belt with Square Plates

Not applicable (man-made)

Opalite Egg

Synthetic Glass (Simulated Opal)

Opalite

Synthetic Silicon Dioxide (SiO2)

Druzy quartz on matrix

Quartz (SiO₂), microcrystalline crystal coating