Concretion (Sandstone)
Carbonate-cemented Sandstone Concretion
sedimentary
Category
Man Made
Browse man made specimens identified by the Rock Identifier community.
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Magnetic Hematite (Man-made)
Iron Oxide (Fe2O3) with Barium-Strontium Ferrite
mineral
Opalite (Man-made Glass)
Synthetic Opalised Glass
mineral
Blue Goldstone
Man-made glass with crystalline copper/cobalt inclusions
mineral
Opalite
Synthetic Opalized Glass
gemstone
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
mineraloid
Asphalt Concrete (Bituminous Pavement)
Aggregates in Bitumen Matrix
Technogenic / Anthropogenic Pavement Material
Slag
Glassy silicate byproduct (anthropogenic material)
industrial byproduct
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) with polymer resins
Sedimentary-like (Industrial Composite)
Opalite (Man-made Glass)
Fused glass (typically made of dolomite and metal opacifiers)
Man-made Material / Glass
Slag
Anthropogenic Vitreous Silica/Iron oxides
mineral-like byproduct
Libyan Desert Glass
Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)
mineral (Tektite/Impactite)
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
mineraloid / man-made glass
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Anthropogenic (Man-made)
Concrete
Anthropogenic Conglomerate
sedimentary
Opalite (Man-made Glass)
Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)
Synthetic Mineral Simulant / Glass
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Asphalt Concrete
Bituminous Concrete (Anthropic Rock)
sedimentary
Chert (Chalky Flint Node)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Goldstone (Brown/Gold)
Aventurine Glass (Man-made glass with Copper inclusions)
gemstone
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
sedimentary (imitation)
Opalite
Man-made opalescent glass (SiO2 + metal oxides)
mineral (synthetic)
Rose Quartz and Cherry Quartz (Dyed Glass/Quartz)
Silicon Dioxide (SiO2) with inclusions/dye
gemstone
Blue Goldstone
Synthetic glass with cobalt and copper inclusions
man-made glass
Cubic Zirconia (Jewelry Setting)
Cubic Zirconia (ZrO2)
gemstone
Dzi Bead (Etched Chalcedony)
Cryptocrystalline Quartz (SiO2) with chemical etching
mineral
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Dragon's Breath (Mexican Opal Glass)
Artisan Foil Glass (SiO2 based)
mineraloid
Cobalt Glass Slug (Cullet)
Man-made Silicate Glass with Cobalt Oxide (CoO)
mineraloid
Opalite
Synthetic Glass (SiO2 + impurities)
mineral
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
mineral
Silicon Carbide (Carborundum)
Silicon Carbide (SiC) / Moissanite (natural)
mineral
Asphalt (Bituminous pavement)
Bituminous concrete / Asphalt
Sedimentary (Anthropogenic)
Titanium-Coated Hematite (Aura Hematite)
Titanium-bonded Hematite (Fe2O3 with a Ti coating)
mineral
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
mineral
Aura Quartz (specifically Titanium Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)
mineral
Titanium Aura Quartz
Silicon Dioxide (SiO2) coated with Titanium and Niobium
mineral