Man Made Object (Metal Alloy)

Slag (Industrial Glass/Metal)

Ferrous slag or Glassy silicate byproduct

Clear quartz fragment (rock crystal)

Quartz, silicon dioxide (SiO₂)

Native copper-bearing rock

Native copper (Cu), likely with copper oxides/carbonates in a host rock

Blue opal heart cabochon

Common opal, hydrated amorphous silica (SiO₂·nH₂O), likely blue-dyed or synthetic opalite

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material

Sea Glass (White/Clear)

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

Aura Quartz

Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)

Red Slag Glass

Amorphous Silica (Industrial byproduct with metallic oxide dopants)

Native Copper

Native Copper (Cu)

Blue faceted gemstone ring, likely synthetic sapphire or blue topaz

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

Iron meteorite candidate

Probable iron-rich meteorite; possible stony-iron or weathered nickel–iron alloy

Bismuth

Bismuth (Bi)

Iron Meteorite Fragment

Siderite (Geological term for iron meteorite class - Fe/Ni alloy)

Silicon

Element Si

Green sea glass or tumbled green quartz (uncertain)

Likely quartz (SiO₂) if natural; alternatively man-made soda-lime glass

Tumbled yellow jasper or chalcedony

Microcrystalline quartz, SiO₂; likely iron-oxide-bearing jasper/chalcedony

Botryoidal chalcedony (likely agate/jasper variety)

Microcrystalline quartz, SiO₂

Polished silver sheen obsidian heart

Obsidian (volcanic glass), primarily rhyolitic silica-rich glass

Baked-clay ceramic fragment (likely brick or pottery)

Fired clay, primarily aluminosilicate minerals; not a natural rock

Conglomerate

Conglomerate Rock (Paraconglomerate)

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Probable metallic meteorite fragment

Unclassified iron meteorite candidate, chiefly kamacite (α-Fe–Ni alloy)

Opalite

Synthetic Opalised Glass

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Sunstone

Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)

Blue-beaded gemstone jewelry, likely lapis lazuli or dyed blue agate

Uncertain from the image; possible lazurite-bearing lapis lazuli (Na₃Ca(Si₃Al₃)O₁₂S) or blue chalcedony (SiO₂)

Likely blue glass or synthetic gemstone jewelry

Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass

Vesicular basalt (weathered scoria)

Scoriaceous basalt; chiefly plagioclase, clinopyroxene, olivine, and iron-titanium oxides

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Slag

Ferrous Slag (Siliceous industrial waste)

Copper Nugget

Native Copper (Cu)

Green Aura Quartz

Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)

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

Amorphous Silica (SiO2) with copper or chromium additives

Blue Obsidian

Volcanic Glass (SiO2 with inclusions)

Native bismuth

Bismuth (Bi), commonly with a naturally oxidized surface

Green sea glass (likely bottle glass)

Man-made soda–lime silicate glass; not a natural mineral

Sea Glass

Amorphous silicon dioxide (Man-made glass weathered by nature)

Likely iron meteorite fragment

Iron–nickel meteorite, commonly kamacite–taenite (Fe–Ni alloy)

Yellow faceted gemstone, likely citrine or yellow sapphire

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

Blue glassy tumbled stone, likely blue chalcedony or slag glass

Chalcedony (microcrystalline SiO₂), possibly man-made blue glass

Sea Glass (Uranium/Vaseline Glass variant)

Silicon Dioxide (SiO2) with trace Uranium Oxide (U3O8)

Likely iron meteorite fragment

Fe–Ni metallic meteorite, possibly an octahedrite (kamacite–taenite alloy)