Red Jasper
Silicon dioxide (Microcrystalline Quartz, $SiO_2$)
sedimentary
Category
Mineral (Native Element Alloy)
Browse mineral (native element alloy) specimens identified by the Rock Identifier community.
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Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily Quartz / Chalcedony: SiO2)
metamorphic
Vesicular Basalt (Scoria)
Basalt (Vesicular texture)
igneous
Chert (Flint nodules in limestone)
Silicon Dioxide (SiO2)
sedimentary
Turquoise
Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O
gemstone
Iron Meteorite
Iron-nickel alloy (primarily kamacite and taenite)
Mineral/Rock (Extraterrestrial Origin)
Turquoise Beads
CuAl6(PO4)4(OH)8·4H2O
gemstone
Iron Meteorite
Iron-Nickel Alloy (Kamacite and Taenite)
meteorite
Iron Meteorite (Oxidized)
Iron-Nickel Alloy (Fe, Ni)
meteorite
Aura Turquoise or Treated Turquoise Beads
Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O) with metallic coating
gemstone
Likely galena-bearing ore specimen
Galena (PbS), possibly with quartz or calcite gangue
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Moqui Marble (Iron-Oxide Concretion)
Iron Oxide Concretion (Fe2O3)
sedimentary
Agate (specifically a Thunderegg/Agate Nodule)
Cryptocrystalline Quartz (SiO2)
mineral
Iron-Nickel Meteorite Fragment (Unclassified)
Iron-Nickel Alloy (Taenite and Kamacite)
meteorite
Iron-Nickel Meteorite
Siderite (Meteoric Iron-Nickel alloy)
igneous
Iron Meteorite
Siderite (Meteoric Iron-Nickel alloy)
igneous
Red Sandstone
Arenite (Iron-rich Sandstone)
sedimentary
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
mineral
Diamond
Carbon (C)
gemstone
Copper-bearing Mica Schist
Mica Schist with Native Copper inclusions
metamorphic
Galena-rich sulfide specimen
Galena (lead sulfide, PbS), possibly with sphalerite and oxidized sulfides
mineral
Emerald / Fluorite
Beryl (Be3Al2Si6O18) / Fluorite (CaF2)
mineral
Gold Ore (Auriferous Quartz with Chalcopyrite/Pyrite)
Au (Native Gold) in Quartz (SiO2) with FeS2 (Pyrite) or CuFeS2 (Chalcopyrite)
Mineral
Gold Ore in Quartz
Native Gold (Au) in Quartz (SiO2) matrix
mineral
Red Jasper
Silicon Dioxide with Iron Oxide impurities (SiO2)
sedimentary
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Diamond (Faceted)
Carbon (C)
gemstone
Turquoise
Hydrated phosphate of copper and aluminum - CuAl6(PO4)4(OH)8·4H2O
mineral
Red Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Jasper (Green variety)
Silicon Dioxide (SiO₂)
sedimentary
Chert (variously Flint)
Chert (Microcrystalline or cryptocrystalline Quartz, SiO₂)
sedimentary
Yellow Jasper
Opaque Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)
igneous
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
gemstone
Turquoise and Spiny Oyster (Heishi style beads)
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Spondylus (Spiny Oyster shell)
mineral and organic gemstone
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium) - CuAl6(PO4)4(OH)8·4H2O
mineral
Galena (likely)
Galena, lead sulfide (PbS)
mineral
Ruby
Corundum (Al2O3:Cr)
gemstone