Mineral (Metal)

Lepidolite on Quartz

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite) / SiO2 (Quartz)

Pyrite in Matrix

Iron Disulfide (FeS2)

Aura Rose Quartz

SiO2 (Silicon Dioxide with Titanium/Gold coating)

Lepidolite with Quartz

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

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in matrix

Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)

Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))

Gossan (Iron Hat) with Quartz and Chlorite

Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite

Possible weathered metal-rich rock or slag fragment

Uncertain; possibly iron-oxide-rich breccia or industrial slag

Polished red gemstone pendant, likely red jasper or brecciated jasper

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

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Green Slag Glass

Amorphous Silica Glass (Anthropogenic)

Amethyst and clear gemstone ring

Amethyst (purple quartz, SiO₂), likely set with colorless quartz or glass accents

Iron-rich sandstone (Gozan/Ironstone)

Ferruginous Sandstone (clastic sedimentary rock)

Cubic Zirconia

Cubic Zirconia (Zirconium Dioxide, ZrO2)

Flint (Chert Node)

Silicon Dioxide (SiO2)

Gossan with Copper Carbonate (Chrysocolla/Malachite)

Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)

Likely quartz-rich igneous pebble

Uncertain; possibly granite or quartz-bearing pegmatite

Lepidolite

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

Lepidolite

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

Green agate/chalcedony bead necklace

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

Diamond (Cut Gemstones in Jewelry)

Carbon (C)

Vesicular basalt (possibly weathered amygdaloidal basalt)

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

Stony-Iron Meteorite (likely Mesosiderite or Ordinary Chondrite)

Meteorite (Silicate-Metal Matrix)

Pallasite Meteorite

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

Iron Gossan (Limonite/Goethite)

Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones

Rose Quartz

SiO2 (Crystalline Quartz with trace inclusions)

Smoky Quartz

Silicon Dioxide (SiO₂)

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8); variety of Orthoclase Feldspar

Serpentinite

Serpentinite (composed primarily of Serpentine-group minerals: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Pyrite

Iron Sulfide (FeS2)

Native gold nuggets

Gold (Au), usually with minor silver and copper

Native Silver

Silver (Ag)

Pyrite

Iron Sulfide (FeS2)

Auriferous Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Nickel

Nickel (Ni)

Gold Nugget

Native Gold (Au)

Gold

Native Gold (Au)

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

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

Bauxite

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

Black Onyx

Onyx (Silicon Dioxide, SiO2)

Diamond (in jewelry)

Cubic Carbon (C)

Limonite with Hematite

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