Mineraloid (Synthetic)

Pink tourmaline (rubellite)

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

Amethyst ring

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

Labradorite cabochon

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

Ametrine

Ametrine (SiO2 - Silicon Dioxide with trace amounts of Iron)

Fursuit (Synthetic Fur Specimen)

Canis anthropomorphus syntheticus

Green glassy gemstone-like specimen

Likely synthetic glass or treated quartz; exact identification requires testing

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Polished honey-yellow quartz-like crystal

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

Diamond jewelry pendant or cluster

Diamond, crystalline carbon (C), likely mounted in metal

Faceted red gemstone, likely garnet

Garnet group; probably almandine-pyrope solid solution, (Fe,Mg)₃Al₂(SiO₄)₃

Blue topaz pendant

Topaz (Al₂SiO₄(F,OH)₂), likely treated blue topaz

Chalcanthite

Copper(II) sulfate pentahydrate (CuSO4·5H2O)

Painted River Rock

Artificially Coated Sedimentary Rock

Blue gemstone, likely iolite or blue sapphire

Iolite (cordierite, Mg₂Al₄Si₅O₁₈) or corundum (sapphire, Al₂O₃)

Black onyx or black spinel ring stone

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

Strawberry Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Zircon

Zirconium Silicate (ZrSiO₄)

Polished blue-black cabochon, likely blue obsidian or dyed glass-like stone

Indeterminate from image; possible natural obsidian (volcanic glass), commonly SiO₂-rich rhyolitic glass

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Blue Goldstone

Aventurine Glass

Opalite

Man-made opalescent glass (SiO2 + metal oxides)

Assorted gemstone jewelry

Mixed natural and synthetic gemstone cabochons and faceted stones; individual species cannot be determined reliably from this image

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

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

Diamond

Carbon (C)

Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)

Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))

Obsidian

Volcanic Glass (Amorphous silicon dioxide with trace impurities)

Tektite (likely Australite)

Tektite (no specific chemical formula as it's a natural glass of variable composition, mostly SiO2, Al2O3, FeO, MgO, CaO, K2O, Na2O, TiO2)

Opalite (likely man-made glass)

Opalite; amorphous silica glass, not a natural mineral

Tumbled dalmatian jasper (likely)

Microcrystalline quartz/chalcedony with black amphibole or aegirine inclusions; commonly sold as “dalmatian jasper”

Tiger’s-eye

Chatoyant quartz (SiO₂), commonly pseudomorphic quartz after crocidolite

Dalmatian Stone

Dalmatian Stone (Felsic Igneous Rock)

Sapphire (Blue)

Corundum (Al2O3)

White Sapphire

Corundum (Al2O3)

Blue quartz crystal (likely synthetic or coated quartz)

Quartz, silicon dioxide (SiO₂); possible aqua-aura quartz

Opalite

Man-made opalized glass

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Likely diamond accent

Diamond (crystalline carbon, C)

Ruby

Corundum (Al2O3 with Chromium traces)

Blue Sapphire

Corundum (Al2O3)

Corundum (variety Ruby/Sapphire)

Aluminum Oxide (Al2O3)

Rose Quartz

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

Smoky Quartz

Silicon Dioxide (SiO2)