Metal (Elemental Mineral)

Ironstone / Gossan with Quartz Inclusions

Limonite / Goethite rich Sandstone / Gossan

Bauxite

Bauxite (Al2O3·2H2O)

Quartz Vein in Host Rock (Gossanous Matrtix)

Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)

Pyrite in Quartz

Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Sandstone

Arenite (SiO2 primarily)

Pallasite Meteorite (likely Imilac or Brenham)

Stony-Iron Meteorite (Pallasite)

Gold Nugget

Native Gold (Au)

Cubic Zirconia (Diamond Simulant)

Zirconium Dioxide (ZrO2)

Emerald and Diamond (Jewelry Setting)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities) and Carbon (C)

Lavender Quartz (appearing as beads) and Druzy Quartz

Silicon Dioxide (SiO2)

Granite

Intrusive Igneous Rock

Quartz crystal pendant

Quartz (silicon dioxide, SiO₂), likely rock crystal or milky quartz

Quartz Vein in Host Rock (Likely Slate or Shale)

Hydrothermal Quartz (SiO2) in Pelitic host rock

Opalite

Synthetic glass (SiO2 + metal additions)

Blue Calcite

Calcium Carbonate (CaCO3)

Barite

Barium Sulfate (BaSO4)

Native Copper (in coinage alloy)

Copper (Cu)

Aura Quartz Geode (Angel Aura Quartz)

Silicon Dioxide (SiO2) bonded with precious metals

Aura Quartz (Pink/Magenta Aura Quartz)

Silicon Dioxide (SiO2) treated with vapor-deposited precious metals

Gossan (Iron Hat)

Iron oxide-rich weathered rock (primarily Limonite and Goethite with secondary Quartz)

Aura Quartz

Titanium or Gold bonded Silicon Dioxide (SiO2)

Quartz Vein in Siltstone

Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix

Limonite with Quartz (Gossan)

Hydrated iron(III) oxide-hydroxide mixture (FeO(OH)·nH2O) with Silicon Dioxide (SiO2)

Granite

Intrusive Igneous Rock

Metallic iron meteorite (probable)

Iron meteorite, typically kamacite–taenite (Fe–Ni alloy)

Gold

Native Gold (Au)

Aura Druzy Agate (Star Shape)

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating

Limonite (Iron Stone/Gossen)

Limonite (FeO(OH)·nH2O)

Quartz Pebble

Silicon Dioxide (SiO2)

Gold

Native Gold (Au)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Gold

Gold (Au)

Iron-Stained Quartz/Quartzite

Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)

Serpentinite

Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)

Likely hematite-rich ironstone or metallic mineral fragment

Hematite (Fe₂O₃), possibly with magnetite (Fe₃O₄) or metallic iron

Native Copper in Matrix

Native Copper (Cu)

Amber Inlay Jewelry

Fossilized Resin (C10H16O)

Natural Gold Nugget

Native Gold (Au)

Opalite

Synthetic Glass (Hydrated Silica Simulant)

Aura Quartz Geodes (Lab-Altered)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition