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)

Blue chalcedony cabochon (probable)

Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)

Polished ruby cabochon (likely synthetic or treated)

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

Beach Pebble Quartzite / Chalcedony Pebble

Silicon Dioxide (SiO2)

Opalite (likely man-made opalescent glass)

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

Faceted blue gemstone, likely aquamarine

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

Opalite

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

Granite (likely weathered, coarse-grained specimen)

Granite; chiefly quartz, feldspar, and mica

Red jasper

Jasper, a microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Silicon Carbide (Carborundum)

Moissanite (SiC)

Green aventurine bead (likely)

Quartz, SiO₂, with green fuchsite inclusions

Tumbled jasper pebble

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides and hydroxides

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.

Blue glassy mineral specimen, possibly dyed or synthetic

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

Note: Item is not a geological specimen

Polyester mesh and Ethylene-vinyl acetate (EVA) polymer

Blue Goldstone

Synthetic glass with cobalt and copper inclusions

Tumbled tiger’s-eye

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

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).

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

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

Polished honey-yellow quartz-like crystal

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

Red faceted gemstone, possibly ruby (identification uncertain)

Ruby, if natural: corundum (Al₂O₃) colored by chromium

Blue Agate Geode (Dyed)

Cryptocrystalline Quartz (SiO2)

Rough White Zircon

Zircon (Zirconium Silicate, ZrSiO4)

Blue Goldstone

Synthetic glass with copper or cobalt/manganese inclusions

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)

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Feldspar Rock

Emerald

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

Blue-violet faceted gemstone, likely amethyst

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

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

Ruby (Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Pink feldspar-rich granite

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

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

Clear faceted gemstone, likely synthetic cubic zirconia

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

Blue Goldstone

Man-made glass with cobalt and metal flecks

Tumbled opalite (likely man-made glass)

Opalite glass; a synthetic opalescent glass, not a natural mineral species

Weathered granite cobble

Granite, a coarse-grained felsic intrusive igneous rock

Red granite boulder

Granite, a coarse-grained felsic intrusive igneous rock; commonly quartz + feldspar + mica