Synthetic (Man Made Glass)

Tourmalinated Quartz

Crystalline Silicon Dioxide with Schorl inclusions (SiO2 + NaFe3Al6(BO3)3Si6O18(OH)4)

Granodiorite

Granodiorite

Beaded gemstone bracelet

Indeterminate; likely small polished mineral beads, possibly turquoise or dyed stone, with metal and glass components

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic zirconium dioxide, ZrO₂); possibly colorless quartz or laboratory diamond

Tumbled blue chalcedony (possibly blue agate)

Microcrystalline quartz, SiO₂; chalcedony variety

Rough Citrine Quartz

Silicon Dioxide (SiO2) with ferric iron impurities

Obsidian

Volcanic glass (SiO2)

Polished, carved gemstone (possibly dyed agate or glass-like material)

Unconfirmed from the image; no specific mineral can be identified reliably

Green Aventurine

Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)

Likely amethyst cabochon ring

Quartz, SiO₂; purple coloration from trace iron and irradiation

Sapphire

Corundum (Al2O3)

Red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored chiefly by iron oxides

Faceted purple gemstone, likely amethyst

Quartz (SiO₂), purple variety colored by trace iron and natural irradiation

Red agate bead (likely dyed or treated)

Agate, a microcrystalline variety of quartz; SiO₂

Faceted transparent gemstone pendant

Likely cubic zirconia (zirconium dioxide, ZrO₂); possibly diamond or synthetic moissanite

Painted Rock

Weathered Sedimentary Rock (Painted)

Painted River Rock

Painted Quartzite or Smooth Siltstone

Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)

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

Likely synthetic ruby (corundum)

Corundum (Al₂O₃), probably laboratory-grown

White Sapphire

Corundum (Al2O3)

Polished tiger’s-eye

Quartz variety, SiO₂, with crocidolite-derived iron inclusions

Faceted yellow-green gemstone, likely peridot

Olivine, typically forsterite-rich (Mg₂SiO₄)

Clear crystal-bead bracelet, possibly quartz

Unidentified transparent mineral beads; quartz (SiO₂) is one possibility

Obsidian

Volcanic Glass (SiO2)

Green obsidian (likely moldavite)

Natural volcanic glass; if extraterrestrial-impact glass, moldavite (tektite)

Tumbled green glassy mineral, possibly aventurine or fluorite

Uncertain; likely quartz variety (aventurine quartz, SiO₂) or green fluorite (CaF₂)

Silicon Carbide

Silicon Carbide, SiC

Faceted blue gemstone, likely blue topaz or synthetic spinel

Topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); image insufficient for certainty

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Clear quartz sphere

Quartz (silicon dioxide, SiO₂), likely rock crystal or low-grade milky quartz

Chert

Chert (Microcrystalline Quartz)

Blue resin-coated or dyed stone cabochon

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

Colorless faceted gemstone, likely quartz

Quartz (SiO₂), tentative identification; the photo is insufficient to confirm the material

Yellow Sapphire

Corundum (Al2O3:Fe)

Yellow-orange faceted gemstone, likely citrine or yellow topaz

Citrine: quartz, SiO₂; yellow topaz: Al₂SiO₄(F,OH)₂

Violet faceted gemstone, likely synthetic or simulant

Indeterminate from the image; possible violet sapphire (corundum, Al₂O₃), amethyst (quartz, SiO₂), or glass/another simulant

Rose Quartz

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

Chert

Microcrystalline Quartz (SiO2)

Polished black stone sphere, likely obsidian

Obsidian — naturally occurring volcanic glass, chiefly silica-rich rhyolitic glass

Champagne topaz (likely)

Topaz, Al₂SiO₄(F,OH)₂

Chert or Jasper

Microcrystalline Quartz (SiO2)

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

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