Citrine
Quartz (SiO2) - specifically, a variety of macrocrystalline quartz
mineral
Category
Sedimentary (Primary) With Artificial Modification
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Learn about Sedimentary (Primary) With Artificial Modification in the encyclopedia
View all →
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Geode (Quartz)
Silicon Dioxide (SiO2)
mineral
Magnetite / Ironstone
Magnetite (Fe3O4)
mineral
Asphalt (Bituminous pavement)
Bituminous concrete / Asphalt
Sedimentary (Anthropogenic)
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Calcite on Limestone (or Fossil)
Calcium Carbonate (CaCO3)
sedimentary
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Mineral
Picture Jasper
Silicon Dioxide (SiO2) - Opaque Impure Chalcedony
sedimentary
Coquina
Biogenic Limestone (Coquina)
sedimentary
Black Opal
Hydrated Silica (SiO2·nH2O)
Mineraloid
Orange Calcite (Dogtooth/Cluster)
Calcium Carbonate (CaCO3)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Blue Celestite (Celestine) Cluster
Strontium sulfate (SrSO4)
mineral
Halite
Halite (Sodium Chloride, NaCl)
mineral
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Galena
Lead Sulfide (PbS)
mineral
Celestine (Celestite)
Strontium sulfate (SrSO4)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Aragonite Star Cluster (or Aragonite Sputnik)
Aragonite (Orthorhombic Calcium Carbonate, CaCO3)
mineral
Chert Nodule (Commonly known as Flint or River Rock)
Silicon Dioxide (SiO2)
sedimentary
Coal (most likely Bituminous or Anthracite)
Coal (organic sedimentary rock)
Sedimentary
Peridot and Citrine Gemstones (in a ring setting)
Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Metal Alloy (Jewelry)
Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.
Man-made Material (jewelry, metal alloy)
Native Copper
Native Copper (Cu)
mineral
Carnelian Agate
Silicon dioxide (SiO2) - variety of Chalcedony
mineral
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
sedimentary (anthropogenic/technogenic)
Botryoidal Black Chalcedony Geode (Black Grape Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
mineral and glass
Fluorite
Calcium Fluoride (CaF2)
mineral
Celestite (Celestine)
Celestine (Strontium Sulfate, SrSO4)
Mineral
Hematite (Concretion)
Iron(III) oxide (Fe2O3)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (Limestone-based)
Silicon Dioxide (SiO2)
sedimentary