Anthropogenic Material (Man Made Sedimentary Mimic)

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

Sandstone (with Liesegang rings or joints)

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)

Sea Glass

Man-made silicate glass (Amorphous silicon dioxide)

Blue Goldstone

Aventurine Glass

Concretion with Geode Cavity

Ferruginous Sandstone Concretion with Quartz Center

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 opalized glass

Sea Glass

Man-made silicate glass

Slag Glass

Amorphous Silicate (Man-made)

Titanium-Coated Hematite (Aura Hematite)

Titanium-bonded Hematite (Fe2O3 with a Ti coating)

Vesicular basalt (weathered scoria)

Scoriaceous basalt; chiefly plagioclase, clinopyroxene, olivine, and iron-titanium oxides

Red glassy gemstone, possibly garnet

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

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Slag (Anthropogenic Glass/Iron byproduct)

Ferro-silicate Slag

Ironstone Concretion (Pot Stone)

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

Felsic Drill Core (likely Gneiss or Granite)

Felsic Metamorphic Rock (Gneissic profile)

Aura Quartz (Rainbow Quartz)

Silicon Dioxide (SiO2) with metallic vapor coatings

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

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

Dyed Imperial Jasper (Sea Sediment Jasper)

Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony

Carborundum (Silicon Carbide)

Silicon Carbide (SiC)

Blue glassy gemstone cabochon, likely dyed chalcedony or glass

Uncertain; possible dyed chalcedony (microcrystalline quartz, SiO₂)

Colorless quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Chert (Arrowhead)

Chert (SiO2)

Likely clear quartz pebble or glassy quartz fragment

Quartz (silicon dioxide, SiO₂)

Strawberry Quartz

Silicon Dioxide (SiO2) with Hematite or Goethite inclusions

Iron-rich slag or ironstone; appearance is not diagnostic

Likely iron-oxide-rich material (hematite, Fe₂O₃, and/or magnetite, Fe₃O₄); possibly smelting slag

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Hematite

Iron(III) oxide (Fe2O3)

Mother of Pearl (Nacre)

Aragonite (CaCO3) with Organic Matrix

Ferrous Slag

Iron/Steel Slag (Complex Calcium-Alumino-Silicates)

Clear quartz fragment

Quartz (silicon dioxide, SiO₂)

Diamond (or Simulant)

Carbon (C)

Blue-green cabochon, likely chalcedony or treated glass imitation

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

Weathered iron-rich concretion or ironstone nodule

Goethite–hematite limonite concretion (FeO(OH), Fe₂O₃, and hydrated iron oxides)

Sandstone Concretion

Clastic Sedimentary Concretion (SiO2 with Iron Oxide)

Goldstone (Brown/Gold)

Aventurine Glass (Man-made glass with Copper inclusions)

Aura Quartz Geodes (Lab-Altered)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition