Mineral (Refined Metal)

Rhyolite

Extrusive igneous rock (felsic)

Diamond (in jewelry)

Carbon (C)

Small brown mineral/rock fragment

Indeterminate; possibly weathered quartz-rich rock, ironstone, or a sulfide mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Beryl (likely Aquamarine or Green Beryl)

Beryllium aluminum silicate (Be3Al2Si6O18)

Gold Ore (Auriferous Quartz with Chalcopyrite/Pyrite)

Au (Native Gold) in Quartz (SiO2) with FeS2 (Pyrite) or CuFeS2 (Chalcopyrite)

Lepidolite

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

Quartz Vein in Host Rock (Gneiss/Schist)

Silicon Dioxide (SiO2) within a metamorphic matrix

Gossan (with Limonite and Hematite)

Gossanous iron-oxide rock (Fe2O3 · nH2O)

Slag Glass

Silicon dioxide with impurities

Quartz-bearing Pegmatite with Metallic Sulfides

Pegmatite / Quartz-Feldspar Matrix with Pyrite and Mica

Green Fluorite

Calcium Fluoride (CaF2)

Bauxite

Bauxite (mixture of Hydrous Aluminum Oxides)

Gold Ore

Native Gold (Au) in Matrix

Lepidolite

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

Opalite

Synthetic Glass / Man-made Opal Simulant

Pyrite

Iron Sulfide (FeS2)

Gold Nugget

Native Gold (Au)

Bismuth Crystal

Bismuth (Bi)

Quartz-bearing Ore (likely Gold-bearing Quartz)

Quartz (SiO2) with potential sulfide mineralization (Pyrite/Arsenopyrite)

Bauxite

Bauxite (mixture of hydrous aluminum oxides: Al(OH)3 & AlO(OH))

Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Biotite-bearing metamorphic rock, likely gneiss or schist

Mica-rich quartz–feldspar gneiss/schist; exact identification requires testing

Cabochon gemstone ring, likely smoky quartz or tourmaline

Unconfirmed quartz (SiO₂) or brown tourmaline (dravite); visual identification is inconclusive

Small metallic mineral fragment

Unidentified metallic sulfide or native-metal fragment

Mixed gemstone jewelry collection

Likely amethyst, rose quartz or pink tourmaline, smoky quartz, and dark tourmaline/onyx; exact identifications are uncertain from the image

Lepidolite with Rubellite Tourmaline

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

Iron-stained quartz vein in altered host rock

Quartz (SiO₂) with iron oxides/hydroxides, likely hematite and goethite; host rock uncertain from the image

Quartz and Limestone Grouping

Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)

Pallasite Meteorite

Pallasite (Stony-iron meteorite; Fe-Ni alloy with (Mg,Fe)2SiO4 olivine)

Native Silver

Silver (elemental Ag)

Quartz Vein

Silicon Dioxide (SiO2)

Quartz Vein in Basalt or Mafic Rock

Silicon Dioxide (SiO2) vein in volcanic/mafic matrix

Ironstone Pebble

Sedimentary ironstone / Hematitic Sandstone

Lepidolite

K(Li,Al)3(Al,Si,4)10(O,F,OH)2

Amethyst

Quartz (Silicon Dioxide, SiO2)

Slag (Industrial Glassy Byproduct)

Ferro-silicate Slag

Limonite (Ochreous)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Lepidolite

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

Metallic sulfide-bearing rock, likely galena-rich ore

Galena (lead sulfide, PbS), possibly mixed with pyrite/chalcopyrite and host rock

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite with Quartz

Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)