Anthropogenic (Man Made Material Processed By Nature)

Slag

Anthropogenic silicate slag

Slag Glass

SiO2 (Silicon Dioxide) with impurities

ABS Plastic (Acrylonitrile Butadiene Styrene)

(C8H8)x·(C4H6)y·(C3H3N)z

Sea Glass

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

Man-made Carved Stone (Scream Mask/Skull motif)

Carved Soapstone or Serpentine-rich rock

Tumbled opalite (likely man-made glass)

Opalite glass; a synthetic opalescent glass, not a natural mineral species

Opalite

Man-made Glass (SiO2 + additives)

Opalite

Opalescent Glass (SiO2 + coloring agents)

Aura Quartz (Titanium Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti)

Sea Glass

Amorphous silicon dioxide (SiO2) - Man-made glass tumbled by nature

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Red-orange sunstone (likely aventurine feldspar) bead bracelet

Feldspar, commonly oligoclase or labradorite with copper inclusions; composition varies by source

Granodiorite / Granite (Weathered)

Granodiorite

Titanium-coated Metal Cube (Man-made Fidget Toy)

Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)

Conglomerate

Conglomerate Rock (Paraconglomerate)

Sea Glass (White/Clear)

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

Terrazzo (Man-made Composite)

Cementitious or Resin-bound Lithic Composite

Likely polished quartz or glass-like mineral cabochon

Probably quartz (SiO₂), though the image cannot exclude man-made glass

Rainbow Hematite Ring

Iron(III) oxide (Fe2O3) with thin-film coating

Man-made Synthetic Material (Costume Faux Fur)

Synthetic Polymer (Polyester/Acrylic)

Slag

Anthropogenic Vitrification Product / Silicate Slag

Opaline Glass (Opalite)

Synthetic Silicon Dioxide Glass

Cobalt Blue Glass / Cullet Glass

Silicon dioxide (Amorphous man-made glass)

Blue quartzite or blue aventurine glass-like aggregate

Quartzite, predominantly SiO₂ (identification uncertain from image)

Concrete fragment or Conglomerate

Artificial Conglomerate (Concrete) or Natural Conglomerate

Sea Glass

Anthropogenic Silicate Glass

Iron Slag

Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)

Tumbled black stone, likely black obsidian

Obsidian (volcanic glass; chiefly silica-rich rhyolitic composition)

Polymer Clay (Mock Mineral)

Polyvinyl chloride (PVC) with plasticizers and pigment

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Goldstone

Man-made glass infused with metallic copper

Asphalt Concrete

Bituminous Concrete

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Chert (Arrowheads)

Microcrystalline Quartz (SiO2)

Blue goldstone (man-made glass)

Copper-bearing aventurine glass; synthetic silicate glass

Concrete-like aggregate surface with embedded rock fragments

Anthropogenic concrete or exposed aggregate; not a natural rock specimen

White pebble, likely quartz or calcite

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

Cubic Zirconia (Jewelry Setting)

Cubic Zirconia (ZrO2)

Dzi Bead (Etched Chalcedony)

Cryptocrystalline Quartz (SiO2) with chemical etching

Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating

Sea Glass

Amorphous Silicon Dioxide (SiO2)

One Pound Coin (UK)

Nickel-Brass Alloy (Cu-Zn-Ni)