Mineral (Processed Metal)

Polished orange chalcedony pendant

Chalcedony, microcrystalline quartz (SiO₂), likely orange carnelian or orange agate

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Amethyst (in jewelry)

Silicon Dioxide (SiO2) with iron impurities

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Granite

Intrusive Felsic Igneous Rock

Shale with Plant Fossils / Carbonaceous Shale

Laminated Mudrock (Siliciclastic)

Man-made Slag (Industrial Byproduct)

Anthropogenic Glassy Residue

Dyed or coated quartz geode

Quartz geode; silicon dioxide (SiO₂), likely artificially color-enhanced

Bauxite

Bauxite (mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))

Pink Granite

Phaneritic intrusive igneous rock with dominant Alkali Feldspar

Ruby (set in a ring; possibly synthetic or imitation)

Corundum, Al₂O₃; red color is typically caused by chromium

Amethyst cabochon ring

Amethyst, purple quartz (SiO₂), colored primarily by iron-related defects and irradiation

Pearl (Imitation or Cultured)

Calcium Carbonate (Aragonite/Calcite) - CaCO3

Quartzite (Water-Worn)

Quartzite (SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Malaysian 50 Sen Coin

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

Granite

Felsic intrusive igneous rock

Native Copper

Native Copper (Cu)

Granite

Intrusive Igneous Rock

Quartz-bearing pyrite–chalcopyrite specimen

Pyrite (FeS₂), likely chalcopyrite (CuFeS₂), with quartz (SiO₂)

Gossan (Iron Cap)

Limonitic Gossan (Fe2O3·nH2O mixed)

Red Sandstone

Quartz Arenite (with Iron Oxide)

Gossan (Limonite/Goethite)

Hydrated iron oxides (primarily FeO(OH)·nH2O)

Turquoise-style beaded bracelet

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly dyed or composite beads

Green Schist

Greenschist (Chlorite Schist)

Native silver fragment (probable)

Silver, Ag; possibly silver-bearing sulfide or plated metal

Quartz-rich metallic sulfide ore (probable pyrite-bearing rock)

Pyrite, FeS₂, in a quartz-rich host; exact identification is uncertain from the image

Iridescent bismuth crystal

Bismuth (Bi), commonly laboratory-grown and oxidized

Copper Ore

Native Copper (Cu) often found with Chalcocite (Cu2S) or Bornite (Cu5FeS4)

Vanadinite

Vanadinite (Pb5(VO4)3Cl)

Pink Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Faceted transparent gemstone, likely glass or cubic zirconia

Uncertain from image; possible cubic zirconia (zirconium dioxide, ZrO₂) or glass imitation

Granite

Felsic intrusive igneous rock

Bismuth

Bismuth (Bi)

Moss Agate

Chalcedony (SiO2) with inclusions of manganese or iron oxides

Moss Agate

Silicon dioxide (SiO2) with inclusions

Beryl (Aquamarine)

Be3Al2Si6O18

Sandstone

Arenite (SiO2 based)

Granite

Felsic intrusive igneous rock

Granite

Felsic intrusive igneous rock

Pyrite

Iron Sulfide (FeS2)

Quartzite Pebble

Quartzite (primarily SiO2)