Man-made Synthetic Material (Costume Faux Fur)
Synthetic Polymer (Polyester/Acrylic)
not a rock
Category
Not A Rock (Man Made Industrial Metal)
Browse not a rock (man made industrial metal) specimens identified by the Rock Identifier community.
Learn about Not A Rock (Man Made Industrial Metal) in the encyclopedia
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Mystic Topaz
Aluminum Silicate Fluoride Hydroxide (Al2SiO4(F,OH)2) with metallic film coating
mineral
Granitic Pegmatite
Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8, Mica: KAl2(AlSi3O10)(OH)2)
Igneous
Nickel coin (U.S. currency)
Cupronickel (75% Copper, 25% Nickel alloy)
man-made alloy (metallic)
Sea Glass
Man-made silicate glass weathering product
sedimentary
Goldstone
Avventurina (Man-made Glass with Copper inclusions)
mineral
Opalite
Man-made Glass (Synthetic Opalized Glass)
gemstone
Slag (Industrial Glass/Metal Waste)
Artificial silicate/ferro-silicate byproduct
Mineraloid (Industrial byproduct)
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Quartz vein in metamorphic rock
Crystalline Silicon Dioxide (SiO2) in Host Rock
metamorphic
Cherry Quartz with Rose Quartz
Crystalline Quartz (SiO2) with glass-based synthetic components
gemstone
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Note: Item is not a geological specimen
Guitar Components (Steel, Nickel, Plastic, Wood)
Synthetic/Consumer Product
Limestone
Sedimentary Rock (Primarily CaCO3)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Goldstone (Red)
Aventurine Glass (Cupriferous glass)
Synthetic Glass (Man-made)
Goldstone
Not a natural mineral or rock. It is an ornamental glass.
Manufactured Glass (Simulant)
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Slag (Industrial Glassy Byproduct)
Anthropogenic silicate byproduct (Slag)
Mineral-like byproduct (often mistaken for igneous rock or meteorite)
Slag (Industrial Byproduct)
Anthropogenic Vitreous Silicate material
igneous
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Slag (Industrial By-product)
Anthropogenic Vitreous Silica/Iron Silicate
mineral
Quartz Vein in Schist / Gneiss
Silicon Dioxide (SiO2) in Metamorphic Matrix
igneous
Diamond (or Cubic Zirconia simulant)
Carbon (C) - Diamond / Zirconium dioxide (ZrO2) - CZ
mineral
Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
man-made rock (technosol)
Slag (Industrial)
N/A (Anthropogenic Slag)
industrial by-product
Brick fragment (Man-made material)
N/A (Fired clay)
man-made
Quartzite
Silicon Dioxide (SiO2)
metamorphic
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Synthetic/Man-made glass (often mistaken for a mineral)
Quartzite
Metamorphic rock primarily composed of Quartz (SiO2)
metamorphic
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Slag (Industrial Byproduct)
Ferrous/Non-ferrous Silicate
igneous (artificial/anthropogenic)
Blue glass-like tumbled specimen
Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image
mineral
Fluorite (Polished Point/Tower)
Calcium Fluoride (CaF2)
mineral
Polished black stone, likely black obsidian
Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition
igneous
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Pyrite Concretion (Grapestone)
Iron Sulfide (FeS2) Concretion
sedimentary
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral