Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
not a rock (Man-made industrial metal)
Category
Not A Rock (Man Made Industrial Metal)
Browse not a rock (man made industrial metal) specimens identified by the Rock Identifier community.
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One Pound Coin (UK)
Nickel-Brass Alloy (Cu-Zn-Ni)
mineral
Slag
Glassy silicate byproduct (anthropogenic material)
industrial byproduct
Opalite-style glass pendant
Man-made opalescent glass (not natural opal)
mineral
Slag
Anthropogenic Vitreous Silica/Iron oxides
mineral-like byproduct
Opalite
Man-made Glass (SiO2 + additives)
mineraloid (synthetic)
Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
mineral (refined metal)
Cobalt Blue Glass / Cullet Glass
Silicon dioxide (Amorphous man-made glass)
mineral
Slag
Metallurgical by-product
Anthropogenic (Man-made material)
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Opalite
Synthetic Opalized Glass / Man-made Glass
gemstone
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Mineral alternative / Synthetic
Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Man-made Synthetic Material (Plastic/Composite)
Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)
Non-geological / Synthetic
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Slag
Metallurgical Slag
igneous
Opalite
Synthetic glass / Opalized glass
gemstone
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Not a geological specimen
N/A (man-made object)
N/A
Possible obsidian or slag glass
Volcanic glass, primarily SiO₂; alternatively industrial iron-rich glassy slag
igneous
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Opalite (Man-made Glass)
Synthetic Silicon Dioxide Glass (SiO2 + metal oxides)
Synthetic Mineral Simulant / Glass
Ring with an Orange Inlay
N/A (Man-made object)
Man-made Object (Ring)
Slag Glass
SiO2 (Silicon Dioxide) with impurities
man-made glass
Opalite
Synthetic glass / Opaque silicious glass
gemstone
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
sedimentary (artificial)
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Mineral (processed metal)
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
Opalite
Man-made opalized glass
mineral
Dragon's Breath (Mexican Opal Glass)
Artisan Foil Glass (SiO2 based)
mineraloid
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
mineral
Synthetic Resin Charm (Seal Shape)
Polymer Resin with plastic glitter / Polyethylene terephthalate glitters
Synthetic material (Not a rock or mineral)
N/A - Non-Geological Item
not a rock/mineral
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
industrial byproduct (anthropogenic material)