Limonite-stained Gossan/Ironstone
Goethite and Hematite (Fe2O3 • nH2O)
sedimentary
Category
Mineral (Metal)
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Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Native Copper
Native Copper (Cu)
mineral
Copper Ore with Malachite and Chalcocite
Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)
mineral
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Beryl (likely var. Aquamarine or Goshenite) in Matrix
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Polished moss agate pendant
Moss agate, a chalcedony variety of microcrystalline quartz (SiO₂), with green chlorite/actinolite inclusions
mineral
Granite
Granite (felsic intrusive igneous rock)
igneous
Limonitic Gossan
Goethite/Limonite aggregate after sulfide
igneous and metamorphic derivative (weathered)
Orange Calcite with Siderite/Iron Oxide Coating
Calcium Carbonate (CaCO3)
mineral
Quartz Vein in Siltstone
SiO2 (Quartz) on clastic sedimentary matrix
sedimentary
Pyrite in Quartz
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral
Quartz Vein / Quartz Matrix
Silicon Dioxide (SiO2)
mineral
Native Copper
Native Copper (Cu)
mineral
Costume Jewelry with Synthetic Gemstones
Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)
mineral
Rhodochrosite (Beads) and Citrine (Pendant)
Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)
mineral
Native Copper
Copper (Cu)
mineral
Beryl (Aquamarine)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Amygdaloidal Basalt
Extrusive mafic igneous rock with amygdules
igneous
Silver (Native Silver/Alloy Specimen)
Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy
mineral
N/A - Man-made object (Jewelry Chain)
Antiqued or Oxidized Metal Chain (often Steel or Brass)
Mineral (processed metal)
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Quartz-veined Metamorphic Rock
Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
mineral
Granite
Intrusive Igneous Rock
igneous
Multicolor quartz bead bracelet
Quartz (silicon dioxide, SiO₂); bead colors may be from different varieties or treated quartz
gemstone
Sandstone (Quartzose)
Arenite (predominantly SiO2)
sedimentary
Meteorite
Chondrite / Iron-Nickel Meteorite fragment
meteorite
Gossan (Iron Hat)
Limonitic Gossan (predominantly FeO(OH)·nH2O)
igneous/metamorphic derivative
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone
Blue-green faceted pendant stone
Undetermined; possibly synthetic glass or a blue-green gemstone such as topaz or quartz
gemstone
Rose Quartz
Silicon Dioxide (SiO2) with trace impurities of Titanium, Manganese, or Iron
mineral
Indeterminate metallic mineral fragments
Possibly pyrite, chalcopyrite, or metallic sulfide-bearing rock
mineral
Granite
Intrusive igneous rock
igneous
Opalite
Synthetic glass / Opalized glass
gemstone
Bismuth crystal
Bismuth (Bi), commonly laboratory-grown hopper crystal
mineral
Gold Nugget
Native Gold (Au)
mineral
Polished banded agate, likely moss or dendritic agate
Microcrystalline quartz (chalcedony), SiO₂, with iron/manganese inclusions
mineral