Man Made Material (Jewelry, Metal Alloy)

Sea Glass

Man-made vitreous material (silica glass)

Blue goldstone (man-made glass)

Copper-bearing aventurine glass; synthetic silicate glass

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Man-made)

Green Sea Glass

Man-made vitreous material (silica glass)

Polymer Clay (Mock Mineral)

Polyvinyl chloride (PVC) with plasticizers and pigment

Exposed Aggregate Concrete (Pea Gravel)

Concrete with Siliceous Alluvial Gravels

Pyrite in Quartz (Drill Core)

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions

Slag

Metallurgical Slag

Green Sea Glass

Amorphous Silica (man-made glass), SiO2 + additive metal oxides

Diamond-set gold ring

Diamond (crystalline carbon, C); mounted in a gold alloy setting

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)

Not a rock, mineral, or geological specimen

Blue glass-like bead or gemstone keychain ornament

Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image

Sea Glass

Man-made vitreous material (silica-based glass)

Diamond-set gold ring

Diamond (carbon, C; cubic crystal structure), set in a gold alloy

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Bismuth

Bismuth (Bi)

Gemstone ring (stones not reliably identifiable from the image)

Likely faceted yellow stones and clear stones set in a metal band; species and treatments are indeterminate visually

Concrete Fragment

Hardened Portland cement and mineral aggregate

Slag (Industrial Byproduct)

Artificial silicate/iron byproduct

Blue-stone and diamond ring

Blue stone is possibly blue sapphire (corundum, Al₂O₃); surrounding stones appear to be diamonds (carbon, C).

Blue gemstone cross pendant

Likely faceted blue topaz (Al₂SiO₄(F,OH)₂); identification is uncertain from the image

Man-made Slag (Industrial Byproduct)

Anthropogenic Glassy Residue

Blue Goldstone

Man-made glass with crystalline copper/cobalt inclusions

Concrete

Anthropogenic Conglomerate

Blue Goldstone

Man-made glass with suspended copper, cobalt, or manganese particles

Opaline Glass (Opalite)

Synthetic Silicon Dioxide Glass

Asphalt (Road Aggregate)

Bituminous conglomerate

Asphalt Concrete

Bituminous conglomerate

Gem-set gold ring

Likely gold alloy set with a colorless gemstone, possibly diamond or clear quartz; the stone cannot be identified reliably from the image

Concrete Rubble with Aggregate

Hardened Portland Cement Paste with Coarse Aggregate

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Gemstone ring (stone not identifiable)

Unknown; the small central stone may be a colorless gemstone or glass, and the surrounding metal is gold-colored alloy

Faceted clear gemstone ring, likely quartz or glass imitation

Unidentified colorless faceted material; quartz (SiO₂) is possible, but the image cannot distinguish it from glass or another gem

Blue Goldstone

Goldstone (artificial glass)

Opalite (Synthetic Moonstone/Sea Opal)

Silicon Dioxide (SiO2) glass with metallic inclusions

Multicolor quartz bead bracelet

Quartz (silicon dioxide, SiO₂); bead colors may be from different varieties or treated quartz

Milky quartz (likely quartz crystal fragment)

Quartz, silicon dioxide (SiO₂)

Blue Goldstone

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

Asphalt / Road Aggregate

Bituminous Conglomerate (synthetic)

Chert Arrowhead (Projectile Point)

Microcrystalline Quartz (Chert or Flint)

Ocean Jasper Mushroom

Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)