Man Made Material (Constructed)

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

Porcelain (White Ceramic)

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

Tumbled milky quartz

Quartz (SiO₂), cryptocrystalline-to-massive variety

Blue opalite glass cabochon (likely imitation opal)

Man-made opalescent glass; not a natural mineral

Mohave Turquoise (Composite/Stabilized)

Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions

Opalite

Man-made glass (traditionally simulated Opal)

Asphalt Concrete (Bituminous Concrete)

Bituminous aggregate

Opalite (Synthetic Moonstone/Sea Opal)

Silicon Dioxide (SiO2) glass with metallic inclusions

Opalite

Synthetic glass (SiO2 + impurities)

Asphalt (Bituminous pavement)

Bituminous concrete / Asphalt

Diamond

Native Carbon (C)

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) with polymer resins

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

Avventurina (Man-made Glass 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

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

Opalite

Synthetic glass / Opaque silicious glass

Transit Token (RTD Denver)

Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)

Blue Goldstone

Aventurine Glass

Conglomerate

Conglomerate (Sedimentary rock containing rounded clasts)

Polished opalite (likely man-made opalescent glass)

Opalite is a commercial name, not a mineral; typically opalescent glass, often soda-lime silicate glass

Glass

Amorphous Silicon Dioxide (SiO2)

Opalite

Man-made opalescent glass

Opalite

Man-made opalized glass

Sea Glass

Man-made silicate glass

Slag Glass

Amorphous Silicate (Man-made)

Sea Glass

Man-made silicate glass

Red glassy gemstone, possibly garnet

Unidentified red transparent material; garnet group (X₃Y₂(SiO₄)₃) is a possibility

Slag

Metallurgical by-product

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Asphalt (Bituminous Pavement)

Bituminous mix (Aggregates with Bitumen binder)

Tumbled gray stone, likely quartz-rich pebble

Probable microcrystalline quartz/chalcedony (SiO₂), possibly gray jasper or quartzite

Note: This is a Man-Made Object (Costume/Prop Patch)

Synthetic fiber and pigments (Cellulose/Plastic-based composite)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial byproduct)

Aura Quartz (Rainbow Quartz)

Silicon Dioxide (SiO2) with metallic vapor coatings

Sea Glass

Man-made vitreous material (silica-based glass)

Small pebble, likely limestone

Unidentified carbonate pebble, possibly micritic limestone (calcite, CaCO₃)

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)