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.

Learn about Not A Natural Rock (Man Made Composite) in the encyclopedia

Asphalt Rock

Rock Gypsum

Talc-carbonate Rock

Talc-carbonate Rock

Opalite

Chalk

Goldstone

Anorthosite

Albitite

Dunite

Gondite

Limestone

Coquina

Liesegang Rings (in Sandstone or Siltstone) (Ferruginous Sandstone with Liesegang Banding) — sedimentary

Liesegang Rings (in Sandstone or Siltstone)

Ferruginous Sandstone with Liesegang Banding

Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz

Silicon Dioxide (SiO2)

Beach Pebbles and Jasper (Quartz / Microcrystalline Silicon Dioxide (SiO2)) — sedimentary

Beach Pebbles and Jasper

Quartz / Microcrystalline Silicon Dioxide (SiO2)

Polished agate/chalcedony fragment (Microcrystalline quartz (SiO₂), likely banded chalcedony or agate) — gemstone

Polished agate/chalcedony fragment

Microcrystalline quartz (SiO₂), likely banded chalcedony or agate

Quartzite (Quartzite (predominantly SiO2)) — metamorphic

Quartzite

Quartzite (predominantly SiO2)

Granite (Granite (phaneritic intrusive felsic igneous rock)) — igneous

Granite

Granite (phaneritic intrusive felsic igneous rock)

Diorite with Weathering Rind (Course-grained intermediate plutonic rock (Diorite)) — igneous

Diorite with Weathering Rind

Course-grained intermediate plutonic rock (Diorite)

Pumice (Pumice (Volcanic Rock)) — igneous

Pumice

Pumice (Volcanic Rock)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Sandstone (Arenite (CaCO3/SiO2 cemented quartz)) — sedimentary

Sandstone

Arenite (CaCO3/SiO2 cemented quartz)

Shale or Siltstone (Sedimentary Rock (Siliciclastic)) — sedimentary

Shale or Siltstone

Sedimentary Rock (Siliciclastic)

Agate (specifically Chalcedony nodule) (Silicon Dioxide (SiO2)) — mineral

Agate (specifically Chalcedony nodule)

Silicon Dioxide (SiO2)

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

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Dalmatian Stone (Peralkaline igneous rock containing quartz, feldspar, and arfvedsonite) — igneous

Dalmatian Stone

Peralkaline igneous rock containing quartz, feldspar, and arfvedsonite

Aventurine (Green Quartz) (Silicon Dioxide (SiO2) with Fuchsite inclusions) — mineral

Aventurine (Green Quartz)

Silicon Dioxide (SiO2) with Fuchsite inclusions

Red Jasper (in Quartz/Chalcedony) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (in Quartz/Chalcedony)

Silicon Dioxide (SiO2) with iron oxide inclusions

Tumbled purple agate (likely grape agate or amethystine chalcedony) (Microcrystalline quartz, SiO₂; purple coloration commonly from iron, manganese, or inclusions) — mineral

Tumbled purple agate (likely grape agate or amethystine chalcedony)

Microcrystalline quartz, SiO₂; purple coloration commonly from iron, manganese, or inclusions

Granite or granitic rock fragment (Felsic intrusive igneous rock, typically quartz + feldspar + mica; exact species uncertain from the image) — igneous

Granite or granitic rock fragment

Felsic intrusive igneous rock, typically quartz + feldspar + mica; exact species uncertain from the image

Granite (Phaneritic Plutonic Igneous Rock (composed of Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Plutonic Igneous Rock (composed of Quartz, Feldspar, and Mica)

Conglomerate (Conglomeratic Sandstone) — sedimentary

Conglomerate

Conglomeratic Sandstone

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Turquoise (CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminum)) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminum)

Peacock Ore (Bornite or Chalcopyrite treated with acid) (Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)) — mineral

Peacock Ore (Bornite or Chalcopyrite treated with acid)

Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Sandstone (Arenite (SiO2 principal component)) — sedimentary

Sandstone

Arenite (SiO2 principal component)

Raw Diamond (Rough Uncut) (Diamond (C - pure carbon)) — mineral

Raw Diamond (Rough Uncut)

Diamond (C - pure carbon)

Vesicular basalt (likely weathered lava rock) (Basalt, predominantly calcium-rich plagioclase, pyroxene, and commonly olivine; vesicular texture from gas bubbles) — igneous

Vesicular basalt (likely weathered lava rock)

Basalt, predominantly calcium-rich plagioclase, pyroxene, and commonly olivine; vesicular texture from gas bubbles

Peacock Ore (Bornite (Cu5FeS4) or Chalcopyrite treated with acid) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Chalcopyrite treated with acid

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

Limonite Concretion (Ironstone)

Limonite (FeO(OH)·nH2O) / Goethite

Diamond (Heart Cut) (Carbon (C)) — gemstone

Diamond (Heart Cut)

Carbon (C)

Likely polished dark stone or glassy mineral bead (Indeterminate; possibly obsidian, hematite, or a dark agate) — mineral

Likely polished dark stone or glassy mineral bead

Indeterminate; possibly obsidian, hematite, or a dark agate

Sandstone (Quartzose Sandstone) (Clastic sedimentary rock (SiO2 primary composition)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (SiO2 primary composition)

Tumbled Stones (various) (Mixed Silica-based Minerals (primarily Quartz and Chalcedony)) — mineral

Tumbled Stones (various)

Mixed Silica-based Minerals (primarily Quartz and Chalcedony)

River Stone (likely Mudstone or Siltstone) (Lutite (Clastic sedimentary rock composed of clay and silt-sized particles)) — sedimentary

River Stone (likely Mudstone or Siltstone)

Lutite (Clastic sedimentary rock composed of clay and silt-sized particles)

Dyed Pink Agate (Silicon Dioxide (SiO2) - variety Chalcedony) — mineral

Dyed Pink Agate

Silicon Dioxide (SiO2) - variety Chalcedony

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Slate (Slate (foliated metamorphic rock)) — metamorphic

Slate

Slate (foliated metamorphic rock)

Porphyritic Basalt (Porphyritic Basalt (Silicate Rock)) — igneous

Porphyritic Basalt

Porphyritic Basalt (Silicate Rock)

Hag Stone (Perforated Sedimentary Rock (Typically Limestone or Sandstone)) — sedimentary

Hag Stone

Perforated Sedimentary Rock (Typically Limestone or Sandstone)

River Rock (Sedimentary Rock (various compositions)) — sedimentary

River Rock

Sedimentary Rock (various compositions)

Granite (Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar, and Plagioclase)

Dark glassy pebble, possibly volcanic rock (Likely basalt or volcanic glass (var. obsidian), unconfirmed from image) — igneous

Dark glassy pebble, possibly volcanic rock

Likely basalt or volcanic glass (var. obsidian), unconfirmed from image