Man Made Material (Jewelry, Metal Alloy)

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Metal Chain Belt with Square Plates

Not applicable (man-made)

One Pound Coin (UK)

Nickel-Brass Alloy (Cu-Zn-Ni)

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).

Titanium-coated Metal Cube (Man-made Fidget Toy)

Titanium-anodized or electroplated alloy (e.g., Ti-coated Zinc or Aluminum)

Zinc Alloy (Silver-plated)

Zinc Alloy Casting (Zn-Al-Mg-Cu)

Gold ring with a dark, possibly gemstone setting

Gold alloy; the dark setting is not identifiable from the image

Man-made Metal Pin (Non-geological)

Antimony-Lead Alloy or Zinc/Brass Base with Electroplating

Ring with an Orange Inlay

N/A (Man-made object)

Opalite

Synthetic glass / Simulated opal

Opalite

Synthesized glass / Silicon dioxide glass

Transit Token (RTD Denver)

Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)

Cubic Zirconia (Man-made)

Cubic Zirconia (ZrO2) with Enamel and Metal Alloy

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Man-made Jewelry (Metal and Glass/Plastic)

Synthetic Alloy and Amorphous Solid (SiO2/Polymer)

Stainless Steel (Polished)

Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)

Likely gold-colored metal ring with a possible gemstone

Uncertain; possibly gold alloy (Au) with a small quartz or glass-like setting

Faceted clear gemstone in a gold-colored setting

Unidentified transparent faceted stone; possibly quartz, glass, or another colorless gem

Man-made Blank Ammunition (Brass)

CuZn (Cartridge Brass - roughly 70% Copper, 30% Zinc)

Opalite

Synthetic glass / Opaque silicious glass

Note: Item is a Synthetic/Man-made Object

Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)

Opalite

Synthetic glass / Opalized glass

N/A - Man-made object (Jewelry Chain)

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

Ferrochrome Slag

Anthropogenic slag (Fe-Cr alloy waste)

Opalite

Opalescent Glass (SiO2 + coloring agents)

Blue Goldstone

Synthetic glass with cobalt and copper inclusions

Opalite

Synthesized glass / Silicon dioxide

Opalite

Synthetic glass / Opaque silicious glass

Opalite-style glass pendant

Man-made opalescent glass (not natural opal)

Opalite

Man-made Glass (SiO2 + additives)

Blue Goldstone

Auraventurine (Synthetic glass with cobalt and copper inclusions)

Man-made Jewelry Charm (Enameled Metal)

Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.

Slag Glass

SiO2 (Silicon Dioxide) with impurities

Unidentified gray metallic object

Not determinable from the image; likely a metal screw or manufactured fastener rather than geological material

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Slag

Glassy silicate byproduct (anthropogenic material)

Opalite

Synthetic Opalized Glass

Cobalt Blue Glass / Cullet Glass

Silicon dioxide (Amorphous man-made glass)

Gold coin pendant on a chain

Gold (Au), likely a coin set in a gold-colored metal mount

Slag

Anthropogenic Vitreous Silica/Iron oxides

Opalite

Synthetic Glass (Hydrated Silica Simulant)