Synthetic Glass

Colorless faceted gemstones, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂), trigonal crystal system

Blue Goldstone

Synthetic glass with copper or cobalt/manganese inclusions

Blue Goldstone

Auraventurine (Synthetic glass with cobalt and copper inclusions)

Opalite (Man-made Glass)

Synthetic Opalised Glass

Pink corundum (likely synthetic or treated sapphire)

Corundum, Al₂O₃; pink coloration commonly from chromium or treatment

Blue Goldstone

Aventurine Glass

Opalite

Synthetic Glass, SiO2 base with metallic inclusions

Champagne topaz (likely)

Topaz, Al₂SiO₄(F,OH)₂

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Pink amethyst or pale pink quartz gemstone

Quartz, SiO₂; pink coloration may result from microscopic inclusions or irradiation-related defects

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

Green Glass (often marketed as 'Obsidian' or 'Green Quartz')

Amorphous Silica (SiO2) with copper or chromium additives

Faceted clear gemstone, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂); exact identity is uncertain because the strong flash and cut obscure diagnostic features

Blue Goldstone

Aventurine Glass

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)

Opalite

Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)

Opalite

Synthetic Opalized Glass / Man-made Glass

Tumbled green beryl or glassy green gemstone

Likely beryl, Be₃Al₂Si₆O₁₈; possibly treated emerald or synthetic glass

Opalite (likely man-made opalescent glass)

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

Red glassy mineral specimen, likely synthetic ruby or red spinel

Most consistent with synthetic corundum (Al₂O₃, ruby) or synthetic spinel (MgAl₂O₄); exact identification requires testing

Goldstone (Brown)

Aventurine glass

Blue resin-coated or dyed stone cabochon

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

Diamond

Natural Diamond (Carbon, C)

Faceted quartz crystal sphere (likely rock crystal)

Quartz, silicon dioxide (SiO₂)

Opalite (Synthetic Moonstone/Opal)

Synthetic Silica Glass

Goldstone (Red)

Aventurine Glass

Opalite

Synthetic Glass (typically Silica/Magnesium based with metal additives)

Opalite

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

Strawberry Quartz

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Strawberry Quartz and Rose Quartz

Silicon Dioxide (SiO2) with inclusions

Faceted golden beryl (likely heliodor)

Beryl, Be₃Al₂Si₆O₁₈; yellow color from iron impurities

Blue aventurine quartz (likely)

Quartz, silicon dioxide (SiO₂), probably blue aventurine variety

Strawberry Quartz (Lepidocrosite/Hematite-Included Quartz)

Quartz (Silicon Dioxide) with Lepidocrosite or Hematite inclusions (SiO2 + Fe2O3 · nH2O)

Green glassy gemstone-like specimen

Likely synthetic glass or treated quartz; exact identification requires testing

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Black spinel bead strand

Spinel, magnesium aluminum oxide (MgAl₂O₄)

Tumbled tiger’s-eye

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

Opalite

Man-made synthetic glass with opalescent effects (SiO2 + metal oxides)

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (zirconium dioxide, ZrO₂) or synthetic glass

Polished pink quartz cabochon

Quartz (SiO₂), likely rose quartz or included quartz

Red glass-like crystal, likely synthetic ruby or red glass

Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass