Rock Identifier

Category

Not A Natural Rock

Browse not a natural rock specimens identified by the Rock Identifier community.

Learn about Not A Natural Rock in the encyclopedia

Asphalt Rock

Rock Gypsum

Coral Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Chalk

Obsidian

Baddeleyite

Cataclasite

Anorthosite

Kimberlite

Tumbled milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Tumbled pink quartz (probable rose quartz) (Quartz, silicon dioxide (SiO₂), likely rose quartz) — mineral

Tumbled pink quartz (probable rose quartz)

Quartz, silicon dioxide (SiO₂), likely rose quartz

Marble (Metamorphic Limestone (Calcite, CaCO3)) — metamorphic

Marble

Metamorphic Limestone (Calcite, CaCO3)

Amethyst (Resin Carving/Orgonite) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Resin Carving/Orgonite)

Silicon Dioxide (SiO2) with iron impurities

Diamond (or Diamond Simulant) (Carbon (C)) — mineral

Diamond (or Diamond Simulant)

Carbon (C)

Fossiliferous Limestone (Biomicrite / Limestone with fossils) — sedimentary

Fossiliferous Limestone

Biomicrite / Limestone with fossils

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere) (Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)) — gemstone

Melo Melo Pearl (or Golden Chalcedony / Yellow Jasper Sphere)

Non-nacreous calcium carbonate pearl (or SiO2 - Silicon Dioxide)

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Yellow Jade (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)) — gemstone

Yellow Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Dalmation Stone (often called Dalmatian Jasper) (Antiperthite-rich Microgranite) — igneous

Dalmation Stone (often called Dalmatian Jasper)

Antiperthite-rich Microgranite

Limonite (Ironstone Concretion) (Limonite (FeO(OH)·nH2O)) — sedimentary

Limonite (Ironstone Concretion)

Limonite (FeO(OH)·nH2O)

Limonite (Iron Ore) (FeO(OH)·nH2O (Hydrous ferric oxide)) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Silver Nuggets (Natural or Cast) (Native Silver (Ag)) — mineral

Silver Nuggets (Natural or Cast)

Native Silver (Ag)

Slag (Industrial Glass) (Anthropogenic Vitreous Slag (Post-industrial byproduct)) — igneous

Slag (Industrial Glass)

Anthropogenic Vitreous Slag (Post-industrial byproduct)

Emerald (Beryl (Be3Al2(SiO3)6) with chromium/vanadium impurities) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) with chromium/vanadium impurities

Colorless faceted gemstone, likely cubic zirconia (Synthetic cubic zirconia (zirconium dioxide, ZrO₂); identity is visual and not definitive) — gemstone

Colorless faceted gemstone, likely cubic zirconia

Synthetic cubic zirconia (zirconium dioxide, ZrO₂); identity is visual and not definitive

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Chalcopyrite (Peacock Ore) (Chalcopyrite (CuFeS2) with Bornite (Cu5FeS4) oxidation) — mineral

Chalcopyrite (Peacock Ore)

Chalcopyrite (CuFeS2) with Bornite (Cu5FeS4) oxidation

Amethyst (Raw Quartz) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Raw Quartz)

Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Yellow Quartz (Citrine or Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (Tumbled)

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine or Citrine-colored Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Citrine-colored Quartz)

Silicon Dioxide (SiO2)

Smoky Quartz (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

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

Bauxite

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

Lapis Lazuli (Tumbled Specimen) (Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)) — metamorphic

Lapis Lazuli (Tumbled Specimen)

Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Citrine Geode (or Druzy Citrine) (Silicon Dioxide (SiO₂) - a variety of Quartz) — Mineral

Citrine Geode (or Druzy Citrine)

Silicon Dioxide (SiO₂) - a variety of Quartz

Blue chalcedony (likely dyed or polished) (Chalcedony, microcrystalline quartz (SiO₂)) — mineral

Blue chalcedony (likely dyed or polished)

Chalcedony, microcrystalline quartz (SiO₂)

Citrine Quartz (or Heat-Treated Amethyst / Smoky Quartz) (Silicon Dioxide (SiO2)) — gemstone

Citrine Quartz (or Heat-Treated Amethyst / Smoky Quartz)

Silicon Dioxide (SiO2)

Moss Agate (Silicon Dioxide with inclusions (SiO2)) — mineral

Moss Agate

Silicon Dioxide with inclusions (SiO2)

Wonderstone (Banded Rhyolite) (Rhyolite (Silicon Dioxide with Iron Oxide impurities)) — igneous

Wonderstone (Banded Rhyolite)

Rhyolite (Silicon Dioxide with Iron Oxide impurities)

Dalmatian Stone (Dalmatian Jasper) (Dalmatian Stone (A variety of Perthite / Aplite)) — Igneous

Dalmatian Stone (Dalmatian Jasper)

Dalmatian Stone (A variety of Perthite / Aplite)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Halite (Halite (Sodium Chloride - NaCl)) — Mineral

Halite

Halite (Sodium Chloride - NaCl)

Opalite Egg (Synthetic Glass (Simulated Opal)) — mineral

Opalite Egg

Synthetic Glass (Simulated Opal)

Carnelian (Chalcedony (cryptocrystalline quartz), SiO2) — Mineral

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2