Nickel coin (U.S. currency)
Cupronickel (75% Copper, 25% Nickel alloy)
man-made alloy (metallic)
Category
Man Made Alloy (Metallic)
Browse man made alloy (metallic) specimens identified by the Rock Identifier community.
Learn about Man Made Alloy (Metallic) in the encyclopedia
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One Pound Coin (UK)
Nickel-Brass Alloy (Cu-Zn-Ni)
mineral
Stainless Steel (Polished)
Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)
Mineral equivalent / Metal Alloy
Titanium-coated Metal Cube (Man-made Fidget Toy)
Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)
Mineral alternative / Synthetic
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Metal Alloy (Likely Pewter or Sterling Silver)
Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).
Man-made material (metal)
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Non-geological
Zinc Alloy (Silver-plated)
Zinc Alloy Casting (Zn-Al-Mg-Cu)
mineral (refined metal)
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Metal Chain Belt with Square Plates
Not applicable (man-made)
Man-made Object (Metalwork)
Man-made Blank Ammunition (Brass)
CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)
Anticrystalline / Synthetic Alloy
Bismuth Crystal
Bismuth (Bi)
mineral
Bismuth
Bismuth (Bi)
mineral
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Man-made Object (Metal/Alloy)
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Mineral (processed metal)
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Rose Gold (Copper-Gold Alloy)
Aurum-Cuprum Alloy (Au-Cu)
mineral (native element alloy)
N/A - Non-Geological Item
not a rock/mineral
Unidentified gray metallic object
Not determinable from the image; likely a metal screw or manufactured fastener rather than geological material
mineral
Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Mineral (synthetic) and Metal (precious/base)
Cubic Zirconia (Man-made)
Cubic Zirconia (ZrO2) with Enamel and Metal Alloy
mineral
Goldstone
Aventurine Glass (Man-made)
mineral
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
mineral
Not a rock, mineral, or geological specimen
N/A
Likely gold-colored metal ring with a possible gemstone
Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting
mineral
Aura Quartz (specifically Titanium Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)
mineral
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
mineral
Slag
Glassy silicate byproduct (anthropogenic material)
industrial byproduct
Not a geological specimen
N/A (man-made object)
N/A
Man-made Jewelry Charm (Enameled Metal)
Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.
Synthetic / Manufactured Artifact
Malaysian 50 Sen Coin
Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)
Man-made object (coin)
Aura Quartz (Titanium-coated Quartz)
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Mineral description (Anthropogenic material)
Ring with an Orange Inlay
N/A (Man-made object)
Man-made Object (Ring)
Aura Quartz (Titanium Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Antropogenic (Man-made industrial byproduct)
Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Goldstone
Aventurine glass (Synthetic glass with copper inclusions)
mineraloid / man-made glass
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
mineral
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass