Native Gold (in Jewelry)
Gold (Au)
mineral
Category
This Appears To Be A Man Made Metallic Object, Likely Jewelry, Not A Natural Rock, Mineral, Or Geological Specimen.
Browse this appears to be a man made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen. specimens identified by the Rock Identifier community.
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Satin Spar (Selenite variant)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Quartz
Quartz (SiO₂)
Mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Basalt
Mafic Igneous Rock
igneous
Siltstone or Mudstone
Argillaceous sedimentary rock
sedimentary
Fluorite (likely Fluorite on Quartz/Matrix)
Calcium Fluoride (CaF2)
mineral
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Quartzite (Yellow/Iron-Stained)
Quartzite (SiO2 with Iron Oxide impurities)
metamorphic
Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)
N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)
Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Ferrous Slag
Iron/Steel Slag (Complex Calcium-Alumino-Silicates)
Anthropgenic (Industrial Byproduct)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Bull Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Fossilized Shell in Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Jasper (specifically Yellow/Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Blue Goldstone
Auraventurine (Synthetic glass with cobalt and copper inclusions)
Synthetic (Man-made Glass)
Granite (Weathered)
Phaneritic Felsic Igneous Rock
Igneous
Limonite (Iron Stone/Goethite)
Limonite (mixture of hydrated iron oxides, primarily Goethite: α-FeO(OH))
mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Gold Nugget
Native Gold (Au)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Standing Liberty Quarter (Silver Specimen)
Native Silver alloy (Ag with Cu traces)
mineral
Blue Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Fluorite
Calcium Fluoride (CaF2)
mineral
Quartzite (Lithic Artifact)
Quartzite (SiO2)
metamorphic
Moonstone
Orthoclase Feldspar (KAlSi3O8) or Albite mixtures
mineral
Chert (Yellow or Tan Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Chert (Lake Superior Agate variant)
Microcrystalline Quartz (SiO2)
sedimentary
Ferruginous Quartz (Iron-stained Quartz)
Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)
mineral
Moonstone
Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)
mineral
Plastic Building Toy (Lego-style piece)
Acrylonitrile Butadiene Styrene (ABS)
not a rock/mineral
Gold Nugget
Native Gold (Au)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Red Jasper (Siltstone or Chert-based Jasper)
Silicon dioxide with hematite (SiO2 + Fe2O3)
sedimentary