Rock Identifier

Category

Not A Natural Rock (Man Made Composite)

Browse not a natural rock (man made composite) specimens identified by the Rock Identifier community.

Emerald (Faceted Gemstone) (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Emerald (Faceted Gemstone)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Bauxite (Bauxite (mixture of Hydrous Aluminum Oxides)) — sedimentary

Bauxite

Bauxite (mixture of Hydrous Aluminum Oxides)

Pumice (Pumicite) — igneous

Pumice

Pumicite

Carnelian Agate (Silicon Dioxide (SiO₂), a variety of Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO₂), a variety of Chalcedony

Schist (Mica Schist (primarily consisting of muscovite, biotite, and quartz)) — metamorphic

Schist

Mica Schist (primarily consisting of muscovite, biotite, and quartz)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Limestone (Calcareous sedimentary rock (primarily Calcium Carbonate, CaCO3)) — sedimentary

Limestone

Calcareous sedimentary rock (primarily Calcium Carbonate, CaCO3)

Quartz (Quartz (Silicon Dioxide - SiO2)) — Mineral

Quartz

Quartz (Silicon Dioxide - SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Raw Citrine (Citrine (Silicon Dioxide - SiO2)) — mineral

Raw Citrine

Citrine (Silicon Dioxide - SiO2)

Peridot and Citrine Gemstones (in a ring setting) (Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)) — mineral

Peridot and Citrine Gemstones (in a ring setting)

Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)

Biotite Schist (Biotite Schist) — Metamorphic

Biotite Schist

Biotite Schist

Sandstone (Quartzose) (Arenite (SiO2 based)) — sedimentary

Sandstone (Quartzose)

Arenite (SiO2 based)

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Marble (Metamorphosed Limestone (principally CaCO3)) — metamorphic

Marble

Metamorphosed Limestone (principally CaCO3)

Silicon Carbide (Carborundum) (Silicon Carbide (SiC)) — mineral

Silicon Carbide (Carborundum)

Silicon Carbide (SiC)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Banded Iron Formation (Banded Iron Formation (BIF)) — sedimentary

Banded Iron Formation

Banded Iron Formation (BIF)

Jasper and Quartz River Cobble (Silicon Dioxide (SiO2) with Hematite inclusions) — Sedimentary / Metamorphic

Jasper and Quartz River Cobble

Silicon Dioxide (SiO2) with Hematite inclusions

Sedimentary / Metamorphic

Talc (Talc (Mg₃Si₄O₁₀(OH)₂)) — Mineral

Talc

Talc (Mg₃Si₄O₁₀(OH)₂)

Dalmatian Stone (Dalmatian Jasper (actually a Peralkaline Igneous Rock)) — igneous

Dalmatian Stone

Dalmatian Jasper (actually a Peralkaline Igneous Rock)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Chert (Iron-stained) (Chert (Microcrystalline and Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (Iron-stained)

Chert (Microcrystalline and Cryptocrystalline Quartz, SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Sandstone (River Cobble) (Clastic sedimentary rock (primarily SiO2 with various lithic fragments)) — sedimentary

Sandstone (River Cobble)

Clastic sedimentary rock (primarily SiO2 with various lithic fragments)

Bauxite (Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)) — sedimentary

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

Bauxite (Bauxite (Al(OH)3, AlO(OH))) — sedimentary

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Magnetite (potentially Hematite-rich) (Magnetite (Fe3O4)) — mineral

Magnetite (potentially Hematite-rich)

Magnetite (Fe3O4)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Dark-colored Igneous Rock (likely Basalt or Diabase) (Basalt (extrusive igneous) or Diabase (intrusive igneous)) — Igneous Rock

Dark-colored Igneous Rock (likely Basalt or Diabase)

Basalt (extrusive igneous) or Diabase (intrusive igneous)

Sandstone (Arenite (SiO2 based with various mineral cements)) — sedimentary

Sandstone

Arenite (SiO2 based with various mineral cements)

Smoky Quartz (with complementary stones in jewelry setting) (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz (with complementary stones in jewelry setting)

Smoky Quartz (Silicon Dioxide - SiO2)

Turquoise (Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O

Citrine Quartz (Crystalline Quartz (SiO2 with iron impurities)) — mineral

Citrine Quartz

Crystalline Quartz (SiO2 with iron impurities)

Gneiss (Gneiss (a metamorphic rock)) — Metamorphic

Gneiss

Gneiss (a metamorphic rock)

Dalmation Stone (Peralkaline Rock (SiO2 with Arfvedsonite)) — igneous

Dalmation Stone

Peralkaline Rock (SiO2 with Arfvedsonite)

Ironstone Concretion (Iron-rich Mudstone) (Siderite / Geothite concretion (FeCO3 / FeO(OH))) — sedimentary

Ironstone Concretion (Iron-rich Mudstone)

Siderite / Geothite concretion (FeCO3 / FeO(OH))

Iron Meteorite (likely Chondrite or weathered Iron-Nickel) (Meteorite (Fe-Ni alloy & silicates)) — igneous

Iron Meteorite (likely Chondrite or weathered Iron-Nickel)

Meteorite (Fe-Ni alloy & silicates)