Synthetic (Man Made Glass)

Blue opalite glass (likely man-made)

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

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Goldstone (aventurine glass)

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

Polished black stone, likely black obsidian

Volcanic glass; predominantly rhyolitic silica glass (SiO₂-rich)

Sea Glass

Man-made vitreous material (silica-based glass)

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Blue faceted gemstone, likely synthetic sapphire or blue glass

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

Slag

Anthropogenic glassy silicate

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

White quartz pebble or chip

Quartz (silicon dioxide, SiO₂), possibly milky quartz

Unidentified translucent crystal/mineral fragment

Likely quartz (SiO₂), but visual identification is uncertain

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2

Man-made Blank Ammunition (Brass)

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

Pink Quartz / Sea Glass

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)

Slag Glass

Vitreous Silicate Residue

Sea Glass

Man-made silicate glass (Amorphous silicon dioxide)

Yellow faceted gemstone, likely citrine or yellow sapphire

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

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Faceted glass-like gemstone object

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

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

Quartz, silicon dioxide (SiO₂)

Libyan Desert Glass

Tektite (high-silica impact glass), SiO2

Blue Glass or Slag Glass

Amorphous Silica (Anthropogenic Glass)

Synthetic Faux Fur Fursuit

Polyacrylonitrile / Polyester (Synthetic Textile)

White sea glass (naturally frosted glass fragment)

Man-made silicate glass, typically soda-lime glass; not a mineral or rock

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

Stainless Steel (Polished)

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

Tumbled opalite (likely man-made glass)

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

Black tumbled stone, possibly obsidian

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

Clear quartz sphere

Quartz (silicon dioxide, SiO₂)

Libyan Desert Glass

Libyan Desert Glass (SiO2 with trace elements)

Sea Glass (White/Clear)

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

Decorative gemstone bracelet or jewelry

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

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Clear quartz tumbled stone

Quartz (silicon dioxide, SiO₂)

Tumbled milky quartz pebble

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