Man Made Material (Metal)

Green Sea Glass

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

Crackled Quartz (Dyed)

Silicon Dioxide (SiO2)

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Byproduct)

Sea Glass

Man-made vitreous material (silica-based glass)

Unidentifiable Rock Fragment

Ocean Jasper Mushroom

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

Concrete Fragment

Hardened Portland Cement Composite

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)

Asphalt (Bituminous Concrete)

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

Blue Goldstone

Man-made glass with crystalline copper/cobalt inclusions

Concrete rubble

Anthropogenic conglomerate

Conglomerate

Conglomerate (clastic sedimentary rock)

Blue Goldstone

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

Opalite glass sphere (likely synthetic imitation)

Man-made opalescent glass; not natural opal

Blue slag glass / industrial smelter slag

Man-made iron-rich silicate slag; composition variable, commonly Fe–Ca–Mg–Al silicates with glassy phases

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

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

Diamond ring

Diamond, crystalline carbon (C)

Porcelain (White Ceramic)

Mullite-bearing Vitrified Ceramic (Major phases: Mullite Al6Si2O13, Glassy Silica SiO2)

Asphalt Concrete (Bituminous Concrete)

Bituminous aggregate

Opalite (Synthetic Moonstone/Sea Opal)

Silicon Dioxide (SiO2) glass with metallic inclusions

Green cabochon gemstone, likely aventurine or dyed chalcedony

Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony

Opalite

Man-made glass (traditionally simulated Opal)

Asphalt (Bituminous pavement)

Bituminous concrete / Asphalt

Opalite

Synthetic glass (SiO2 + impurities)

Diamond

Native Carbon (C)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins

Slag

Anthropogenic Vitrification Product / Silicate Slag

Blue cabochon gemstone, likely synthetic glass or dyed stone

Indeterminate from image; possible glass, synthetic spinel, sodalite, or lapis lazuli

Blue glassy gemstone-like specimen

Indeterminate; possibly dyed or treated turquoise, blue apatite, or man-made glass

Red Sandstone or Brick Fragment

Arenite (if sandstone)

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Polished black pebble, likely basalt

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

Green glass sphere/marble

Soda-lime glass (primarily SiO2, Na2O, CaO)

Conglomerate

Conglomerate (Sedimentary rock containing rounded clasts)

Black-and-white agate geode pendant

Agate (microcrystalline quartz, SiO₂), likely a hollow geode slice with chalcedony and drusy quartz

Opalite (a synthetic glass)

Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant

Not a rock, mineral, or geological specimen

Glass

Amorphous Silicon Dioxide (SiO2)

Goldstone

Avventurina (Man-made Glass with Copper inclusions)