Man Made Material (Jewelry, Metal Alloy)

Concrete / Conglomerate (Man-made)

Artificial Conglomerate (Cementitious Composite)

Asphalt Concrete

Bituminous Concrete

Red faceted gemstone ring

Likely synthetic ruby or red spinel; exact identification requires testing

White pebble, likely quartz or calcite

Indeterminate from image; possible microcrystalline quartz (SiO₂) or calcite (CaCO₃)

Blue Slag Glass

Man-made Silicon Dioxide (Amorphous)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Sea Glass

Silicon dioxide (mostly)

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Glass

Amorphous Silicon Dioxide (SiO2)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Chert (Chalky Flint Node)

Chert (Microcrystalline Quartz, SiO2)

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)

Concrete fragment or Conglomerate

Artificial Conglomerate (Concrete) or Natural Conglomerate

Diamond (or Simulant)

Carbon (C)

Aura Quartz (Anomalously Coated Quartz)

Silicon Dioxide (SiO2) treated with vaporized metals

Likely tumbled red mineral or glass imitation

Indeterminate; possibilities include red jasper (microcrystalline quartz, SiO₂) or dyed chalcedony

Lava Rock with Fabric Impression

Scoria or Basalt with anthropogenic impressions

Hematite

Iron(III) oxide (Fe2O3)

Amber Inlay Jewelry

Fossilized Resin (C10H16O)

Gold

Aurum (Au)

Slag Glass (Cullet)

Amorphous Silica (man-made), primarily SiO2 with trace metal oxides

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Copper Nugget

Native Copper (Cu)

Mother of Pearl (Nacre)

Aragonite (CaCO3) with Organic Matrix

Sandstone-based Concrete Fragment

Cementitious Composite with Sedimentary Aggregate

Concrete

Hydrated Portland Cement Aggregate Composite

Slag

Anthropogenic Vitrification Product / Silicate Slag

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Byproduct)

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

Galena (lead sulfide)

Galena, PbS

Goldstone

Aventurine glass (Synthetic glass with copper inclusions)

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

Concrete Fragment

Hardened Portland Cement Composite

Heart-shaped faceted gemstone pendant

Likely yellow quartz (citrine) or synthetic yellow stone, set in metal with small clear accent stones

Faceted transparent gemstone pendant

Likely cubic zirconia (zirconium dioxide, ZrO₂); possibly diamond or synthetic moissanite

Crushed Stone (Likely Limestone or Granite)

Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite

Brick fragment (Man-made material)

N/A (Fired clay)

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)

Decorated turquoise-like bead or mineral pendant

Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper

Asphalt (Bituminous Concrete)

Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)