Mineral (Processed Alloy)

Likely gold-colored metal ring with a possible gemstone

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

Bismuth crystal

Bismuth (Bi), synthetic laboratory-grown crystal

Silicon

Element Si

Unknown dark mineral fragment

Indeterminate; possibly a dark silicate mineral or slag-like geological fragment

Gypsum Wallboard (Drywall)

Hydrous calcium sulfate (CaSO4·2H2O)

Aquamarine (Small Beads)

Beryl (Be3Al2Si6O18 with traces of iron)

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

Antiqued or Oxidized Metal Chain (often Steel or Brass)

Mixed Mineral Collection (with Titanium Aura Quartz)

Silicon Dioxide (SiO2) with metallic coatings and various silicates

Native bismuth

Bismuth (Bi), commonly with a naturally oxidized surface

Man-made Jewelry Charm (Enameled Metal)

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

Small yellow mineral specimen (possibly sulfur)

Unidentified; appearance alone is insufficient to confirm sulfur

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

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

Chalcopyrite

Copper iron sulfide (CuFeS2)

Mixed river pebbles, likely including quartz-rich rocks

Unidentified mixed lithologies; the pale pieces appear quartz- or feldspar-rich, but the image is insufficient for a specific identification

Rose Gold (Copper-Gold Alloy)

Aurum-Cuprum Alloy (Au-Cu)

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Pale green translucent mineral fragment

Indeterminate; possibly fluorite, calcite, or glassy quartz

Crushed stone aggregate

Mixed lithic aggregate; individual fragments cannot be identified from the image

Tumbled greenstone (likely serpentine-rich)

Greenstone; commonly metamorphosed mafic rock composed of actinolite/chlorite with epidote and albite

Limestone Concretion

Calcium Carbonate Concretion (CaCO3)

Gold Nugget

Native Gold (Au)

Dyed Agate

Silicon Dioxide (SiO2) - Chalcedony variety

One Pound Coin (UK)

Nickel-Brass Alloy (Cu-Zn-Ni)

Bismuth Crystal

Bismuth (Bi)

Dyed Cracked Agate

Silicon Dioxide (Quartz variety, SiO2)

Chrysocolla-bearing copper ore

Chrysocolla (hydrated copper aluminum silicate), likely with malachite/azurite and copper sulfides

Silver (Native Silver/Alloy Specimen)

Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy

Bismuth Crystal

Bismuth (Bi)

Heart-shaped polished howlite (likely dyed or stabilized)

Howlite, Ca₂B₅SiO₉(OH)₅; possibly sold as imitation turquoise

Milky Quartz with Chlorite / Mica inclusions

Silicon Dioxide (SiO2) with phyllosilicate inclusions

Unidentified gray metallic object

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

Clear Quartz (Rock Crystal) Bead

Silicon Dioxide (SiO2)

Opalite

Synthetic Glass / Man-made Opal Simulant

Native Silver

Silver (Ag)

Nickel

Nickel (Ni)

Red goldstone beads

Goldstone (man-made copper-bearing glass; not a natural mineral)

Gold Nugget

Native Gold (Au)

Aquamarine

Beryl (Be3Al2Si6O18 with Fe impurities)

Green iridescent glass cabochon or synthetic gemstone

Likely synthetic glass; possibly coated synthetic quartz or lab-created green gemstone

Gypsum (Wallboard/Drywall)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Rounded metallic-looking pebble, likely iron-rich rock or slag

Uncertain; possible limonite/goethite-rich ironstone, hematite-bearing material, or industrial slag

Blue Sapphire and Diamond (Set in Metal)

Corundum (Al2O3) and Diamond (C)