Not A Rock (Synthetic Material)

Heart-shaped faceted gemstone pendant

Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones

Assorted Semi-Precious Gemstone Crosses

Quartz, Silicates, Carbonates (various)

Faceted blue gemstone, likely aquamarine

Aquamarine—blue beryl, Be₃Al₂Si₆O₁₈; identification is uncertain from the image alone

Cubic Zirconia

Zirconium Dioxide (ZrO2)

Opalite (likely man-made opalescent glass)

Opalite; not a true mineral, typically synthetic opalescent glass (silica-based)

Yellow faceted gemstone, likely citrine or yellow sapphire

Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)

Digital Multimeter (Synthetic Object)

Digital Multimeter (DMM)

Red gemstone ring, likely synthetic ruby or garnet

Ruby: corundum (Al₂O₃); possible alternative: almandine garnet (Fe₃Al₂(SiO₄)₃)

Dyed Agate

Silicon Dioxide (SiO2) with synthetic dyes

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

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).

Blue glassy mineral specimen, possibly dyed or synthetic

Uncertain; possible blue fluorite (CaF₂), dyed chalcedony, or man-made glass

Silicon Carbide (Carborundum)

Moissanite (SiC)

Pink feldspar-rich granite

Granite, composed chiefly of quartz, potassium feldspar, and plagioclase, with minor mica or other minerals

Rough White Zircon

Zircon (Zirconium Silicate, ZrSiO4)

Likely citrine or yellow glass imitation in a silver-tone bracelet

Citrine: quartz, SiO₂; exact material cannot be confirmed visually

Blue Agate Geode (Dyed)

Cryptocrystalline Quartz (SiO2)

Polished honey-yellow quartz-like crystal

Quartz (SiO₂), possibly citrine or heat-treated amethyst

Note: Item is not a geological specimen

Polyester mesh and Ethylene-vinyl acetate (EVA) polymer

Gemstone stud earrings, likely set with clear stones

The stones may be diamond (carbon, C) or colorless cubic zirconia (ZrO₂); the image is insufficient to distinguish them.

Tumbled tiger’s-eye

Quartz variety, fibrous golden-brown SiO₂ (pseudomorphic quartz after crocidolite)

Blue-violet faceted gemstone, likely amethyst

Quartz (SiO₂), purple variety colored mainly by iron impurities and irradiation

Faceted clear gemstone, likely quartz or glass imitation

Most likely quartz (SiO₂); exact identification requires refractive-index and hardness tests

Goldstone

Avventurina (Man-made Glass with Copper inclusions)

Polished ruby cabochon (likely synthetic or treated)

Corundum, aluminum oxide (Al₂O₃), colored red by chromium

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Feldspar Rock

Clear faceted gemstone, likely synthetic cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂); visual identification is not definitive and diamond or synthetic moissanite are alternatives

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Hematite bead bracelet

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

Likely blue glass or synthetic gemstone jewelry

Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass

Emerald

Beryl, Be₃Al₂(SiO₃)₆, colored green mainly by chromium and/or vanadium

Blue Goldstone

Man-made glass with cobalt and metal flecks

Ruby (Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Man-made Glass (Tumbled/Shaped)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Black onyx or black spinel ring stone

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

Blue Goldstone

Synthetic glass with cobalt and copper inclusions

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Colorless faceted gemstone (likely cubic zirconia)

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

Blue faceted gemstone ring, likely synthetic sapphire or blue topaz

Uncertain from image; possible corundum (Al₂O₃) or topaz (Al₂SiO₄(F,OH)₂)

Faceted pale-green gemstone, likely prasiolite or green quartz

Quartz (SiO₂), likely prasiolite; identification is uncertain from the photograph