Anthropogenic (Man Made Material Mimicking Sedimentary Rock)

Titanium-Coated Hematite (Aura Hematite)

Titanium-bonded Hematite (Fe2O3 with a Ti coating)

Opaline Glass (Opalite)

Synthetic Silicon Dioxide Glass

Chert (Arrowhead)

Chert (SiO2)

Terrazzo (with Marble and Granite fragments)

Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates

Cherry Quartz with Rose Quartz

Crystalline Quartz (SiO2) with glass-based synthetic components

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

Polyester (Polyethylene terephthalate) / Faux Fur

Goldstone

Not a natural mineral or rock. It is an ornamental glass.

Aura Quartz (Rainbow Quartz)

Silicon Dioxide (SiO2) with metallic vapor coatings

Chert (often called Flint in archaeological contexts)

Microcrystalline or cryptocrystalline Silica (SiO2)

Likely blue-green glassy slag or a weathered mineral fragment

Unidentified; the image does not show diagnostic features sufficient for a mineral identification

Blue-green cabochon, likely chalcedony or treated glass imitation

Cryptocrystalline quartz (chalcedony/possibly chrysoprase); identification uncertain from image

Hematite

Iron(III) oxide (Fe2O3)

Purple glassy pebble, possibly slag glass

Unidentified; likely man-made glass rather than a natural mineral

Small rounded mineral pebble, possibly quartz

Uncertain; likely microcrystalline or crystalline SiO₂ (quartz), potentially with iron-oxide staining

Blue Goldstone

Man-made glass with cobalt and metal flecks

Terracotta (Man-made ceramic brick fragment)

Baked clay / High-iron ceramic (Silicate-based ceramic)

Bouncy Ball (Synthetic Rubber Polymer)

Polybutadiene / Ethylene Vinyl Acetate (EVA)

Likely clear quartz pebble or glassy quartz fragment

Quartz (silicon dioxide, SiO₂)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Picture Jasper

Silicified sedimentary or volcanic rock (primarily SiO2)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Byproduct)

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Granite with Cupules / Bedrock Mortars

Granite (felsic intrusive plutonic rock)

Polished blue glassy mineral specimen, likely sodalite or blue aventurine

Most consistent with sodalite (Na₈Al₆Si₆O₂₄Cl₂), though dyed quartzite or blue glass cannot be excluded from the photograph

Blue glassy-looking specimen, possibly dyed or coated mineral

Not identifiable from the photograph; possibilities include dyed quartz or glassy slag, but composition cannot be established visually.

Opalite

Synthetic Opalised Glass

Blue cabochon, likely dyed or synthetic material

Undetermined; possibly dyed chalcedony (SiO₂), glass, or synthetic corundum

Dyed Agate

Chalcedony (SiO2)

Likely iron-rich slag or weathered ironstone fragment

Uncertain; possibly iron oxide–rich material (hematite/goethite) or industrial iron slag

Dragon's Breath (Mexican Opal Glass)

Artisan Foil Glass (SiO2 based)

Goldstone (brown goldstone)

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

Sea Glass

Amorphous silicon dioxide (Man-made glass weathered by wave action)

Goldstone (with Tiger's Eye and Quartz)

Aventurine glass (Synthetic SiO2 with Cu inclusions)

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Synthetic Costume Accessory (Non-Geological)

Polyester and Acrylic Fiber (Anthropogenic polymer)

Green Sea Glass

Man-made silicate glass (weathered)

Chert (Arrowhead/Artifact Fragment)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Exposed aggregate concrete (stone-chip surface)

Portland-cement concrete containing natural aggregate; not a natural rock

Opalite

Man-made Glass (Synthetic Opalized Glass)

Agate and millefiori glass jewelry

Agate: microcrystalline quartz (SiO₂); millefiori element appears to be man-made glass

Sandstone

Arenite (with iron oxide cement)