Synthetic Glass (Man Made)

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Pink Quartz / Sea Glass

Silicon Dioxide (SiO2)

Man-made Blank Ammunition (Brass)

CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)

Slag Glass

Vitreous Silicate Residue

Blue faceted gemstone, likely synthetic sapphire or blue glass

Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Blue faceted gemstone ring, likely synthetic sapphire or blue topaz

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

Goldstone (aventurine glass)

Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone

Sea Glass

Man-made vitreous material (silica-based glass)

Stainless Steel (Polished)

Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)

Quartz (likely milky quartz or quartz glass-like fragment)

Quartz, silicon dioxide (SiO₂)

Blue Glass or Slag Glass

Amorphous Silica (Anthropogenic Glass)

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Libyan Desert Glass

Tektite (high-silica impact glass), SiO2

Yellow faceted gemstone, likely citrine or yellow sapphire

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

Faceted glass-like gemstone object

Likely synthetic glass or cubic zirconia; exact material cannot be confirmed from the image

Blue opalite glass (likely man-made)

Opalite glass; a silica-based amorphous glass, not natural opal

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Blue glassy mineral fragment, possibly sodalite or dyed/cobalt glass

Uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) if natural, but vivid blue color may indicate cobalt-colored glass

Black tumbled stone, possibly obsidian

Obsidian (volcanic glass; predominantly SiO₂), identification uncertain from image

Sea Glass

Man-made silicate glass (Amorphous silicon dioxide)

Libyan Desert Glass

Libyan Desert Glass (SiO2 with trace elements)

Clear quartz sphere

Quartz (silicon dioxide, SiO₂)

Sea Glass (White/Clear)

Amorphous Silica (Alkali-Lime-Silica Glass), SiO2 + Na2O + CaO

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Synthetic Faux Fur Fursuit

Polyacrylonitrile / Polyester (Synthetic Textile)

Decorative gemstone bracelet or jewelry

Unidentifiable from the blurred image; likely colored glass or synthetic stones, possibly mixed gemstone beads

Green glassy mineral specimen, likely rough emerald or green fluorite

Tentatively beryl (Be₃Al₂Si₆O₁₈), emerald variety; synthetic/man-made glass cannot be excluded from the photograph

Clear quartz tumbled stone

Quartz (silicon dioxide, SiO₂)

Green Slag

Anthropogenic Silicate Glass

Red Slag Glass

Amorphous Silica (Industrial byproduct with metallic oxide dopants)

Obsidian (Blue)

Volcanic Glass (SiO2)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Tumbled opalite (likely man-made glass)

Opalite, a trade name for opalescent glass; not natural opal

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)

Exposed Aggregate Concrete (Pea Gravel)

Concrete with Siliceous Alluvial Gravels

Moldavite

Tektite (Impact Glass), ~80% SiO2 + Al2O3

Likely clear quartz pebble or glassy quartz fragment

Quartz (silicon dioxide, SiO₂)

Goldstone

Aventurine Glass (SiO2 + Cu small inclusions)

Tumbled gray stone, likely quartz-rich pebble

Probable microcrystalline quartz/chalcedony (SiO₂), possibly gray jasper or quartzite