Mineral, Metal (Element)

Blue Calcite

Calcium Carbonate (CaCO3)

Granite Pegmatite

Coarse-grained Granite (SiO2 - Aluminum and Alkalies)

Granitic Pegmatite

Granitic Pegmatite (principally Quartz, Feldspar, and Mica)

Granitic Pegmatite

Coarse-grained Granite (KAlSi3O8 + SiO2)

Digital Multimeter (Synthetic Object)

Digital Multimeter (DMM)

Green Calcite

Calcite (CaCO3)

Pink Sapphire

Corundum (Al2O3 with trace Chromium and Iron)

Jadeite (Jade)

Jadeite; NaAlSi2O6

Rough Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

White Sapphire

Corundum (Al2O3)

Petrified Wood

Silicified Wood (SiO2)

Pink Feldspar

Orthoclase Feldspar (KAlSi3O8)

Sapphire (Corundum variety)

Sapphire (Al₂O₃)

Petrified Wood

Silicified Wood (SiO2)

Emerald

Beryl (variety Emerald), Be3Al2Si6O18 with Cr and/or V

Zircon

Zircon (ZrSiO4)

Corundum

Corundum (Al2O3)

Gold

Native Gold (Au)

Kunzite

Spodumene (LiAlSi2O6), variety Kunzite

Gold Nugget

Native Gold (Au)

Native Gold in Quartz

Native Gold (Au)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Portable Ceramic Space Heater

Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements

Gold Flake / Placer Gold

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold Mineral

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold

Gold (Native Au)

Native Gold Nugget

Native Gold (Au)

Quartz (various varieties)

SiO₂ (Silicon Dioxide)

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold Ore

Native Gold (Au)

Gold flakes

Native Gold (Au)

Gold Ore / Native Gold

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold

Native Gold (Au)

Smoky Quartz

Smoky Quartz (SiO2)

Gold

Native Gold (Au)