Anthropogenic (Man Made Industrial Deposit)

Diamond

Diamond (pure Carbon, C)

Likely clear quartz crystal or glass-like gemstone

Quartz, silicon dioxide (SiO₂); exact identification is uncertain from the strongly magenta-lit image

Polished obsidian

Volcanic glass; predominantly rhyolitic SiO₂

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Orange glassy slag (industrial by-product)

Iron-rich silicate glass; composition varies, commonly Fe–Ca–Al silicate

Turquoise ring

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; the setting appears to be silver-colored metal

Mixed beach-stone and tumbled-glass collection

Predominantly uncertain rocks (likely basalt, granite, and quartz-bearing stones) with anthropogenic glass; one possible banded agate or jasper

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Chert Arrowhead

Microcrystalline Quartz (SiO2)

Polished blue chalcedony (possibly agate)

Microcrystalline quartz, SiO₂; chalcedony, potentially banded agate

Diamond

Diamond (pure native carbon, C)

Asphalt (Bituminous Concrete)

Asphaltum / Bitumen-Aggregate Matrix

Black onyx bead necklace

Black chalcedony, a microcrystalline quartz variety (SiO₂); beads may be dyed or treated

Banded Slag Glass (Leland Blue/Frankfort Green style)

Anthropogenic Glass Specimen (Amorphous Silicon Dioxide with impurities)

Tumbled blue-green stone, likely chrysocolla or dyed chalcedony

Probable chrysocolla (hydrated copper aluminosilicate; variable composition), though appearance could also represent dyed chalcedony

Tumbled black stone, likely black obsidian

Obsidian; volcanic glass, typically rhyolitic composition (SiO₂-rich)

Glass Nugget (Tumbled Glass)

Amorphous Silicon Dioxide (SiO2) with additives

Chert (specifically Flint or Nodular Chert)

Silicon dioxide (SiO2)

Man-made Ceramic / Clay Figurine

Aluminosilicate Ceramic (Processed Clay)

Man-made Crystal (Lead Glass)

Lead oxide-doped Silica Glass (approx. SiO2 + PbO)

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Rough Diamond

Native Carbon (C)

Asphalt Chunk

Asphalt concrete

Diamond

Diamond (pure Carbon, C)

Engineered Quartz Stone

Agglomerated Quartz (SiO2 + Polymer Resin)

Tumbled black obsidian (likely)

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

Diamond

Carbon (C)

Diamond (in jewelry setting)

Diamond (C - Carbon)

Goldstone (brown goldstone)

Man-made aventurine glass, typically copper-bearing silica glass

Botryoidal chalcedony with iron-oxide staining

Microcrystalline quartz (SiO₂), likely iron-oxide-bearing chalcedony

Chert Arrowhead

Microcrystalline Quartz (SiO2)

Decorative gemstone-chip jewelry (likely turquoise, coral, and assorted beads)

Predominantly turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; other pieces appear to be dyed coral or red stone, and possibly shell/metal components

Libyan Desert Glass

Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)

Blue Chalcedony

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Rough Diamond

Diamond (pure Carbon, C)

Hematite Beads

Hematite (Fe2O3)

Weathered fossil shell fragment

Indeterminate bioclastic carbonate, likely molluscan shell (calcium carbonate, commonly aragonite or calcite)

Diamond

Carbon (C)

Polished green-and-black banded cabochon (likely malachite imitation or dyed agate)

Uncertain; possible malachite (Cu₂CO₃(OH)₂), banded agate (SiO₂), or man-made glass

Diamond

Native Carbon (C)

Moissanite

Silicon Carbide (SiC)

Clay Brick

Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)