Man Made (Synthetic Rock)

Clear quartz tumbled stone

Quartz (silicon dioxide, SiO₂)

Polished black pebble, likely basalt

Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine

Diamond (or Cubic Zirconia simulant)

Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ

Sandstone (likely Fossilized Wood or Concrete Simulacrum)

Arenite / Silicified Wood / Anthropogenic Concrete

Rock crystal quartz fragments

Quartz (silicon dioxide, SiO₂)

Concrete with Exposed Aggregate

Anthropogenic conglomerate (Concrete)

Goldstone

Man-made glass with copper inclusions

Cullet Glass (Slag)

Amorphous Silicon Dioxide (Man-made)

Green Sea Glass

Man-made silicate glass (weathered)

Gemstone jewelry ensemble

Likely mixed gemstone and glass-bead jewelry; exact stones cannot be determined from the image

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Polished dendritic agate or jasper

Microcrystalline quartz (SiO₂), likely chalcedony with iron/manganese dendrites

Synthetic Costume Accessory (Non-Geological)

Polyester and Acrylic Fiber (Anthropogenic polymer)

Vesicular basalt (probable iron-rich volcanic rock)

Basalt; chiefly plagioclase, clinopyroxene, olivine, and Fe-Ti oxides

Likely iron-rich slag or weathered ironstone fragment

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

Crushed Stone (Likely Limestone or Granite)

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

Mystic Topaz (Treated Quartz or Topaz)

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating

Sandstone Concretion

Limonitic Sandstone Concretion

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Blue Goldstone

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

Green gemstone ring (likely synthetic or imitation emerald)

Possibly emerald, beryl (Be₃Al₂Si₆O₁₈); the photo cannot confirm the center stone’s identity or whether it is natural.

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Asphalt (Bituminous Concrete)

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

White sea glass (naturally frosted glass fragment)

Man-made silicate glass, typically soda-lime glass; not a mineral or rock

Red goldstone beads

Goldstone (man-made copper-bearing glass; not a natural mineral)

Iron Slag (Industrial Byproduct)

Anthropogenic Vitrification Product/Ferrous Slag

Green sea glass (likely bottle glass)

Man-made soda–lime silicate glass; not a natural mineral

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Green sea glass (likely bottle glass)

Man-made soda-lime silicate glass; not a natural mineral

Obsidian

Volcanic glass

Goldstone (Brown)

Aventurine glass

Baked-clay ceramic fragment (likely brick or pottery)

Fired clay, primarily aluminosilicate minerals; not a natural rock

Red glass-like crystal, likely synthetic ruby or red glass

Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass

Chert Arrowhead (Projectile Point)

Microcrystalline Quartz (Chert or Flint)

Green sea glass (likely)

Man-made glass, likely soda-lime silicate glass; not a natural mineral or rock

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Man-made)

Sandstone Concretion

Clastic Sedimentary Rock (primarily SiO2 with mineral cement)

Sea Glass

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

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2)

Sea Glass

Man-made vitreous material / Silicon dioxide

Slag

Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material