Mineral (Metal)

Diamond (in a gold setting)

Carbon (C)

Bauxite

Aluminium ore consisting largely of the minerals gibbsite Al(OH)3, boehmite γ-AlO(OH) and diaspore α-AlO(OH)

Granite

Intrusive Igneous Rock (Mainly Quartz, Feldspar, and Mica)

Unidentified dark metallic sulfide specimen

Possibly pyrite-, chalcopyrite-, or galena-bearing ore; exact identification requires testing

Gold Ore

Gold-bearing Quartz (Native Gold, Au)

Blue Sapphire and Diamond (Set in Metal)

Corundum (Al2O3) and Diamond (C)

Aura Quartz Bead

Silicon dioxide (SiO2) with metal coating

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Milky Quartz in Gneiss

Quartzite / Foliated Gneiss containing SiO2

Native Copper Nugget

Native Copper (Cu)

Turquoise color-bead and Hematite necklace

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)

Diamond (in a jewelry setting)

Cubic Carbon (C)

Polished banded agate pendant

Agate, microcrystalline quartz (SiO₂), a chalcedony variety

Aura Quartz (Coated Quartz)

Silicon Dioxide (SiO2) coated with vaporized metals

Moss Agate

Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide

Gold Nugget

Native Gold (Au)

Granite

Granite (Plutonic Igneous Rock)

Cassiterite (Tin Ore)

Cassiterite (Tin(IV) Oxide, SnO2)

Milky Quartz

Silicon Dioxide (SiO2)

Lepidolite Pebble

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

Copper Ore (Malachite and Azurite stained rock)

Cupriferous rock containing secondary copper carbonates

Galena-bearing ore (probable)

Galena, lead sulfide (PbS), possibly with sphalerite or metallic sulfides

Galena

Lead sulfide (PbS)

Bauxite (Laterite Clay)

Bauxite (mixture of Hydrous Aluminum Oxides: Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))

Banded Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)

Silicon

Crystalline Silicon (Si)

Celestine (Celestite)

Celestine (Strontium Sulfate, SrSO4)

Lepidolite

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

Copper

Native Copper (Cu)

Milky Quartz

Silicon Dioxide (SiO2)

Native Copper

Native Copper (Cu)

Likely iron meteorite fragment

Unclassified Fe–Ni meteorite; possible stony-iron fragment

Bauxite

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

Diamond (Cluster Ring)

Carbon (C)

Orange cabochon ring

Possibly carnelian (microcrystalline quartz, SiO₂); identification from the photograph is uncertain.

Blue cabochon ring stone, likely sapphire or synthetic blue corundum

Corundum (Al₂O₃), possibly chromium/iron-titanium-bearing sapphire

Gold Nugget

Native Gold (Au)

Metal-rich sulfide ore, likely galena-bearing rock

Galena (PbS) with pyrite/chalcopyrite in a host rock; exact identification requires testing

Gold Nugget

Gold (Au)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Limonite (Ironstone)

Limonite (FeO(OH)·nH2O)

Polished agate pendant (likely carnelian or plume agate)

Microcrystalline quartz, SiO₂ (chalcedony); exact variety cannot be confirmed from the image