Mineral, Metal (Element)

Quartz

Quartz (Silicon Dioxide - SiO2)

Pyrite

Pyrite (Iron sulfide, FeS₂)

Garnet (likely Almandine, Pyrope, or a blend)

Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)

Diamond

Diamond (pure carbon; C)

Quartzite

Quartzite (primarily composed of SiO O₂)

Stainless Steel (Polished)

Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)

United States Quarter Dollar

Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)

Quartz (possibly milky quartz)

Quartz (Silica; SiO₂)

Ferromanganese Nodule

Polymetallic Nodule (composed primarily of MnO2 and Fe2O3)

Gold Nugget

Native Gold (Au)

Gold-bearing Quartz with Pyrite

Quartz (SiO2) with Gold (Au) and Pyrite (FeS2)

Pegmatite (Granitic) with Tourmaline

Granitic Pegmatite (containing Schorl and Quartz)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Pegmatite

Granitic Pegmatite

Fluorite (Polished Point/Tower)

Calcium Fluoride (CaF2)

Amphibolite with Hornblende

Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)

Pegmatite (with smoky quartz and tourmaline/biotite)

Pegmatitic Granite

Sunstone

Oligoclase or Andesine (Plagioclase Feldspar) - (Ca, Na)((Al, Si)2Si2O8)

Granitic Pegmatite

Granite Pegmatite (coarse-grained intrusive igneous rock)

Pegmatite

Granitic Pegmatite

Granitic Pegmatite

Pegmatitic Granite

Granatic Pegmatite

Pegmatitic Granite

Granitic Pegmatite

Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)

Granite Pegmatite with Tourmaline and Muscovite

Pegmatite (Feldspar: KAlSi3O8, Quartz: SiO2, Schorl: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH))

Eudialyte in Matrix

Na15Ca6(Fe,Mn)3Zr3(Si,Nb) (Si25O73) (OH,Cl,H2O)3

Fluorite

Calcium Fluoride (CaF2)

Pegmatite

Granitic Pegmatite

Fluorite in Matrix

Fluorite (CaF2) within a host rock matrix

Eudialyte in Matrix

Eudialyte [Na15Ca6(Fe,Mn)3Zr3(Si25O73)(O,OH,H2O)3(Cl,OH)2]

Granitic Pegmatite

Granite Pegmatite (typically containing Quartz SiO2, Feldspar KAlSi3O8, and Muscovite)

Pegmatite (with Quartz and Feldspar)

Granitic Pegmatite

Pegmatite (Granitic)

Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)

Quartz with Mica (Pegmatite)

Quartz (SiO2) and Muscovite (KAl2(AlSi3O10)(OH)2)

Granitic Pegmatite

Granite Pegmatite (principally KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)

Amethyst

Silicon dioxide / Quartz (SiO2+Fe4+)

Rough Green Sapphire (Corundum)

Corundum (Al2O3 - Aluminum Oxide with trace elements)

Lepidolite on Pegmatite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Granitic Pegmatite

Pegmatite (White Granite variant)

Pegmatitic Granite (Quartz and Feldspar rich)

Rough Gemstone Grains (Mixed Sapphires and Quartz)

Corundum (Al2O3) and Quartz (SiO2)

Pegmatite

Pegmatitic Granite