Metal (Elemental Mineral)

Granite (with Beryl/Aquamarine)

Granite (Feldspar, Quartz, Mica, and Beryl Be3Al2Si6O18)

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Basalt with Quartz Vein

Basalt (fine-grained mafic igneous rock) with crystalline Quartz (SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix

Clear faceted gemstone in an ornate metal bracelet

Unidentified transparent faceted stone; possibilities include quartz (SiO₂), zircon (ZrSiO₄), or glass—image alone cannot distinguish them

Amethyst

Silicon dioxide, SiO2

Celestite (Celestine)

Strontium sulfate (SrSO4)

Olivine

(Mg,Fe)2SiO4

Pyrite

Iron Sulfide (FeS2)

Opalite

Synthetic glass / Opaque silicious glass

Quartz Vein in Pelite (Metamorphic Rock)

Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)

Granite

Plutonic Igneous Rock

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Bauxite

Bauxite (Al2O3·2H2O mixed with iron oxides)

Unidentified dark mineral/rock fragment

Indeterminate; appearance may fit a sulfide-bearing rock or iron-rich mineral

Native Copper with Malachite/Oxide Coating

Native Copper (Cu)

Lepidolite

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

Granite

Intrusive igneous rock

Limonite (Iron Stone/Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Purple fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Bauxite

Bauxite (Al(OH)3, AlO(OH), AlOOH)

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Yellow Beryl (Heliodor)

Beryllium aluminum silicate (Be3Al2Si6O18)

Marble

Recrystallized Calcite (CaCO3)

Green aventurine pendant

Quartz variety, SiO₂, colored mainly by fuchsite or other chromium-bearing mica inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Copper Ore (likely Malachite or Chrysocolla staining)

Copper Secondary Mineral (e.g., Cu2CO3(OH)2)

Beryl in Quartz Matrix

Beryllium Aluminum Silicate (Be3Al2Si6O18)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Lepidolite

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

Bornite

Cu5FeS4

Celestite (Celestine)

Strontium sulfate (SrSO4)

Copper Ore with Malachite and Chrysocolla

Cu2CO3(OH)2 (Malachite) with Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)

Bauxite

Aluminium ore (Hydrated aluminium oxides AlOx(OH)3-2x)

Gold Ore

Native Gold (Au)

Limonite-stained Gossan/Ironstone

Goethite and Hematite (Fe2O3 • nH2O)

Copper Ore with Malachite and Chalcocite

Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)

Lepidolite

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

Beryl (likely var. Aquamarine or Goshenite) in Matrix

Beryllium Aluminum Silicate (Be3Al2Si6O18)

Mystic Topaz (Treated Quartz or Topaz)

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating

Garnet (Almandine or Spessartine likely)

Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)