Man Made Silicate (Anthropogenic Glass)

Chert (Arrowhead/Projectile Point)

Microcrystalline quartz (SiO2)

Polished blue calcite sphere (tentative identification)

Calcite, CaCO₃; blue color generally results from trace impurities or inclusions

Colorless faceted gemstone, likely glass or cubic zirconia

Uncertain; possible cubic zirconia (ZrO₂) or quartz (SiO₂), but the image may show a man-made simulant

Porcelain (Kaolin-based)

Alumina silicate ceramic (composed primarily of Kaolinite: Al2Si2O5(OH)4)

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

Banded Slag Glass (Leland Blue/Frankfort Green style)

Anthropogenic Glass Specimen (Amorphous Silicon Dioxide with impurities)

Clay Brick

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

Iron Slag

Ferrous Slag (Silicate/Oxide mixture)

Green Agate

Silicon dioxide (SiO₂)

Slag

Ferrous Slag (Siliceous industrial waste)

Dyed Crackle Quartz

Silicon Dioxide (SiO2) with synthetic dye

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image

White Marble

Recrystallized Calcite Rock (CaCO3)

Chert (Arrowhead variety)

Chert (SiO2)

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Chert (Arrowhead Debitage or Flake)

Microcrystalline silica (SiO2)

Chert (often called Flint)

Chert (Microcrystalline Quartz, SiO2)

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Tumbled aqua glassy mineral specimen, likely chrysocolla or turquoise imitation

Uncertain from image; possible chrysocolla (hydrated copper aluminosilicate, variable composition) or dyed/man-made glass

Weathered concrete or cementitious slab (not natural rock)

Artificial calcium-silicate cement composite; likely Portland cement concrete

Note: Item is a Synthetic/Man-made Object

Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Glazed Ceramic Tile

Fused Silicate-Clay composite

Blue chalcedony cabochon (probable)

Chalcedony, a cryptocrystalline variety of quartz; silicon dioxide, SiO₂

Nephrite Jade

Nephrite

Crackle Glass (Simulated Gemstone)

Amorphous Solid (SiO2)

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

Concrete aggregate surface

Human-made cementitious composite; primarily calcium-silicate-hydrate cement with mixed silicate aggregate

Iron Slag

Ferrous Slag (complex silicate and oxide byproduct)

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Obsidian Arrowhead

Obsidian (Volcanic Glass)

Goldstone (Brown)

Aventurine glass

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Blue Goldstone

Aventurine glass (Synthetic borosilicate glass with cobalt and metallic inclusions)

Hematite Beads

Hematite (Fe2O3)

Possible tektite or iron-rich slag-like natural specimen

Uncertain; possibly natural glass (tektite) or magnetite-rich rock

Chrysocolla in Malachite

Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)

Sea Glass (Turquoise/Aqua)

Amorphous Silica (SiO2) with transition metal dopants

Blue Goldstone

Synthetic glass with copper or cobalt/manganese inclusions

N/A - Man-made object (Jewelry Chain)

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Man-made Jewelry Charm (Enameled Metal)

Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.