Man Made Object (Metal

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

US Penny

Cuprum (Copper: Cu) and Zincum (Zinc: Zn) Alloy

Ring with an Orange Inlay

N/A (Man-made object)

Not a geological specimen

N/A (man-made object)

Metal Chain Belt with Square Plates

Not applicable (man-made)

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

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

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Opalite

Synthesized glass / Silicon dioxide glass

Opalite

Synthetic glass / Simulated opal

Polished labradorite pendant

Labradorite, a calcium-rich plagioclase feldspar (approximately NaAlSi₃O₈–CaAl₂Si₂O₈)

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).

Not a rock, mineral, or geological specimen

Man-made Metal Pin (Non-geological)

Antimony-Lead Alloy or Zinc/Brass Base with Electroplating

Opalite

Synthetic glass / Opaque silicious glass

Man-made Jewelry Charm (Enameled Metal)

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

Opalite

Synthetic glass / Opalized glass

Aluminum Slag

Anthropogenic Aluminum (Al)

Synthetic Resin Charm (Seal Shape)

Polymer Resin with plastic glitter / Polyethylene terephthalate glitters

Opalite

Synthesized glass / Silicon dioxide

Opalite

Synthetic glass / Opaque silicious glass

One Pound Coin (UK)

Nickel-Brass Alloy (Cu-Zn-Ni)

Note: Item is a Synthetic/Man-made Object

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

Possible weathered basalt or slag fragment

Basalt, chiefly plagioclase and pyroxene; identification is uncertain from the image

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

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Bouncy Ball (Synthetic Rubber Polymer)

Polybutadiene / Ethylene Vinyl Acetate (EVA)

Green glass sphere/marble

Soda-lime glass (primarily SiO2, Na2O, CaO)

Unidentified gray metallic object

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

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Cobalt Blue Glass / Cullet Glass

Silicon dioxide (Amorphous man-made glass)

Gold ring with a clear faceted gemstone

Likely diamond (carbon, C); the photograph is insufficient to confirm the stone or metal

Red glassy gemstone, possibly garnet

Unidentified red transparent material; garnet group (X₃Y₂(SiO₄)₃) is a possibility

Aluminum Slag

Anthropogenic Aluminum (Al)

Chert Arrowhead (Projectile Point)

Microcrystalline Quartz (Chert or Flint)

Malaysian 50 Sen Coin

Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)

Opalite

Synthetic Glass (Silica-based)

Opalite crescent pendant

Opalite (man-made opalescent glass; not a natural mineral)

Blue glass-like bead or gemstone keychain ornament

Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image

Opalite

Synthetic Opalized Glass / Man-made Glass

Faceted clear gemstone in a gold-colored setting

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

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Zinc Alloy (Silver-plated)

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

Opalite

Synthetic Glass / Man-made Opal Simulant