Mineral (Metal)

Lepidolite

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

Native Copper with Malachite and Chrysocolla

Native Copper (Cu) with Malachite [Cu2CO3(OH)2] and Chrysocolla [(Cu,Al)2H2Si2O5(OH)4·nH2O]

Pyrite (Cube variety)

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Polished yellow jasper cabochon

Jasper, microcrystalline quartz (SiO₂) with iron-oxide and clay inclusions

Polished red gemstone pendant, likely red jasper or brecciated jasper

Jasper: microcrystalline quartz (SiO₂), commonly with hematite or iron-oxide inclusions

Weathered mica-rich pegmatite

Granitic pegmatite composed chiefly of quartz, feldspar, and mica (likely biotite/muscovite)

Slag (Industrial Glass Slag)

Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)

Green Agate

Cryptocrystalline Quartz (SiO2)

Dyed Purple Agate Sliced

Silicon Dioxide (SiO2) with artificial pigment

Gold Nugget

Native Gold (Au)

Flint (Chert Node)

Silicon Dioxide (SiO2)

Milky quartz (likely quartz crystal fragment)

Quartz, silicon dioxide (SiO₂)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Silver (Sterling Silver Jewelry)

Argentum (Ag) mixed with Copper (Cu)

Gold

Native Gold (Au)

Pallasite Meteorite

Pallasite (Iron-Nickel Matrix with Olivine/Peridot inclusions)

Pyrulite (Pyrite / Chalcopyrite)

Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)

Pyrite in Matrix

Iron Disulfide (FeS2)

Vesicular basalt (possibly weathered amygdaloidal basalt)

Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine, with weathering minerals filling vesicles

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 inclusions)

Likely weathered basalt with iron-oxide alteration

Basalt (fine-grained mafic volcanic rock), chiefly plagioclase and pyroxene with altered iron-bearing minerals

Black volcanic glass or basalt pendant

Likely basalt (fine-grained mafic rock), possibly obsidian (volcanic glass)

Buffalo Nickel (Indian Head Nickel)

Cupronickel (75% Copper, 25% Nickel)

Turquoise-and-coral silver jewelry brooch

Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; red cabochons appear to be coral, likely set in silver

Gold

Native Gold (Au)

Michigan Float Copper

Native Copper (Cu)

Bauxite

Bauxite (mixture of Gibbiste Al(OH)3, Boehmite ̳-AlO(OH), and Diaspore ́-AlO(OH))

Likely quartz-rich igneous pebble

Uncertain; possibly granite or quartz-bearing pegmatite

Green agate/chalcedony bead necklace

Microcrystalline quartz (SiO₂), likely green chalcedony or dyed green agate

Gold-bearing Quartz Vein in Mafic Rock

Hydrothermal Quartz Vein within Greenschist/Amphibolite facies (SiO2 with Au)

Turquoise jewelry beads/earrings

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly reconstructed or imitation turquoise

Turquoise cabochon ring

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Green jade bead necklace

Most likely nephrite jade (a tough, interlocking amphibole aggregate; commonly tremolite–actinolite), though jadeite jade or dyed serpentine is possible from the image alone.

Diamond

Carbon (C)

Weathered quartz-bearing rock, possibly iron-stained quartzite or granitic pegmatite

Indeterminate; likely quartz-rich silicate rock with iron-oxide staining (SiO₂-dominant)

Limonite with Hematite

Hydrated iron(III) oxide-hydroxide with variable composition (FeO(OH)·nH2O)

Granodiorite

Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)

Carnelian ring

Carnelian, a red-orange variety of chalcedony (microcrystalline quartz, SiO₂)

Iron-rich sandstone (Gozan/Ironstone)

Ferruginous Sandstone (clastic sedimentary rock)

Mixed gemstone jewelry collection

Various gemstone minerals, including likely amethyst (quartz), sapphire or iolite, garnet, pearl, turquoise, and colored beryl or tourmaline