Mineral (Refined Metal)

Silver (S925)

Native Silver (Ag)

Turquoise ring cabochon

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; likely stabilized or treated matrix turquoise

Opalite

Synthetically produced glass (Silicon Dioxide with metallic inclusions)

Biotite schist

Mica schist, composed mainly of biotite mica and quartz with feldspar and iron oxides

Milky Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Limonite and Hematite Gossan

Hydrated Iron Oxide Mix (FeO(OH)·nH2O) / Ferric oxide (Fe2O3)

White Zircon

Zircon (Zirconium silicate, ZrSiO4)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Gold-bearing quartz sulfide specimen

Native gold (Au) with quartz (SiO₂), likely associated with iron sulfides such as pyrite

Beryl (likely Aquamarine) in matrix

Be3Al2(SiO3)6 (Beryllium Aluminum Silicate)

Honey Calcite (Yellow Calcite)

Calcium Carbonate (CaCO3)

Blue Topaz

Aluminum Silicate Fluoride Hydroxide Al2SiO4(F,OH)2

Polished hematite bead (probable)

Hematite, Fe₂O₃

Likely iron-rich rock or metallic mineral fragment

Uncertain; possibly limonite/goethite-rich material or weathered iron meteorite fragment

Blue-green glassy mineral specimen, possibly chalcedony or slag glass

Uncertain; candidate minerals include chrysocolla-bearing chalcedony or copper-bearing glassy slag

Gold

Native Gold (Au)

Gold

Native Gold (Au)

Weathered copper-bearing porphyritic rock (probable andesite or altered volcanic rock)

Likely propylitically altered andesite/latite; green color may reflect chlorite, epidote, or chrysocolla/malachite staining

Likely anthracite coal fragments

Anthracite; predominantly carbon (C), with minor mineral ash and sulfides

Lepidolite

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

Polished labradorite cabochon

Labradorite, plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈

Vesicular basalt (scoria-like volcanic rock)

Vesicular basalt; predominantly plagioclase, pyroxene, and volcanic glass, with possible iron oxides

Pyrite and Quartz Agglomerate

Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)

Granite

Phaneritic Plutonic Igneous Rock (Rich in SiO2)

Granite

Intrusive Igneous Rock (composed primarily of quartz, alkali feldspar, and plagioclase)

Copper ore-bearing rock (likely malachite/chrysocolla in a sulfide-rich matrix)

Cuprite–malachite/chrysocolla mineralization; probable copper sulfides such as chalcopyrite in altered host rock

Blue chalcedony crystal pendant

Chalcedony, microcrystalline quartz (SiO₂), likely blue chalcedony or dyed quartz

Hypersthene

Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)

Mystic Topaz

Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)

Goldstone (aventurine glass)

Man-made copper-bearing glass; not a natural mineral (commonly sold as blue/brown goldstone)

Opalite (Synthetic Opalized Glass)

Synthetic Silicon Dioxide (SiO2) glass

Likely golden mica-bearing metamorphic rock

Micaceous schist, possibly biotite schist; composition commonly quartz + feldspar + biotite/phlogopite mica

Gold Nugget

Native Gold (Au)

Pyrite

Iron Sulfide (FeS2)

Gold Nugget

Native Gold (Au)

Aquamarine cabochon ring

Aquamarine, blue variety of beryl (Be₃Al₂Si₆O₁₈)

Amethyst

Silicon dioxide (SiO2) with iron impurities

Man-made Dyed Aura Quartz

Silicon Dioxide (SiO2) with metallic coating/dye

Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Blue aventurine or dyed blue quartzite pendant

Quartz (SiO₂), likely aventurine quartz/quartzite; exact identification requires testing

Mixed small pebbles and mineral grains

Unidentified detrital sediment; likely quartz-, feldspar-, and lithic fragments