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

Diamond (Natural Diamond (Carbon, C)) — mineral

Diamond

Natural Diamond (Carbon, C)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Blue cabochon gemstone, likely sapphire (Corundum (Al₂O₃), blue variety colored mainly by iron and titanium) — gemstone

Blue cabochon gemstone, likely sapphire

Corundum (Al₂O₃), blue variety colored mainly by iron and titanium

Pink faceted gemstone, likely synthetic ruby or pink sapphire (Corundum (Al₂O₃), possibly chromium-colored ruby; synthetic origin likely) — gemstone

Pink faceted gemstone, likely synthetic ruby or pink sapphire

Corundum (Al₂O₃), possibly chromium-colored ruby; synthetic origin likely

Orange Quartz (Citrine Quartz) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Orange Quartz (Citrine Quartz)

Silicon Dioxide (SiO2) with iron impurities

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Diamond (C) — gemstone

Diamond

C

Diamond (or Diamond Simulant) (C (Carbon) or synthetic equivalent) — gemstone

Diamond (or Diamond Simulant)

C (Carbon) or synthetic equivalent

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Obsidian (Volcanic glass (SiO2)) — igneous

Obsidian

Volcanic glass (SiO2)

Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

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

Diamond (or Diamond Simulant)

Carbon (C)

Pink calcite (likely) (Calcite — calcium carbonate, CaCO₃) — mineral

Pink calcite (likely)

Calcite — calcium carbonate, CaCO₃

Rough Diamond (Diamond (Native Carbon, C)) — mineral

Rough Diamond

Diamond (Native Carbon, C)

Blue Chalcedony (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Blue Chalcedony

Chalcedony (Silicon Dioxide, SiO2)

Asphalt Conglomerate (Artificial Bituminous Conglomerate) — sedimentary

Asphalt Conglomerate

Artificial Bituminous Conglomerate

Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

Rough Diamond (Carbon (C)) — gemstone

Rough Diamond

Carbon (C)

Fossil Shark Tooth (Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna) — fossil

Fossil Shark Tooth

Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Citrine (Raw) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine (Raw)

Silicon Dioxide (SiO2) with iron impurities

White quartzite pebble (Quartzite, composed predominantly of quartz (SiO₂)) — metamorphic

White quartzite pebble

Quartzite, composed predominantly of quartz (SiO₂)

Heart-shaped River Pebble (Chert/Quartzite) (Cryptocrystalline Quartz (SiO2) / Chert Pebble) — sedimentary

Heart-shaped River Pebble (Chert/Quartzite)

Cryptocrystalline Quartz (SiO2) / Chert Pebble

Diamond (Cut Gemstone) (Carbon (C)) — mineral

Diamond (Cut Gemstone)

Carbon (C)

Red Sandstone (Arenite (Iron-rich)) — sedimentary

Red Sandstone

Arenite (Iron-rich)

Jade (Nephrite or Jadeite) (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2 - a variety of actinolite, an amphibole mineral); Jadeite (Na(Al,Fe3+)Si2O6 - a pyroxene mineral)) — Metamorphic rock (for both Nephrite and Jadeite)

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2 - a variety of actinolite, an amphibole mineral); Jadeite (Na(Al,Fe3+)Si2O6 - a pyroxene mineral)

Metamorphic rock (for both Nephrite and Jadeite)

Citrine (Silicon Dioxide (SiO2)) — gemstone

Citrine

Silicon Dioxide (SiO2)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Colorless faceted gemstone, likely cubic zirconia (Cubic zirconia (synthetic ZrO₂), possibly glass or quartz) — gemstone

Colorless faceted gemstone, likely cubic zirconia

Cubic zirconia (synthetic ZrO₂), possibly glass or quartz

Chert (often called Flint) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (often called Flint)

Chert (Cryptocrystalline Quartz, SiO2)

Diamond (Faceted) (Carbon (C)) — gemstone

Diamond (Faceted)

Carbon (C)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Tektite (Natural Impact Glass) — meteorite

Tektite

Natural Impact Glass

Tumbled agate or chalcedony (Microcrystalline quartz (SiO₂), likely brown/orange chalcedony or agate) — mineral

Tumbled agate or chalcedony

Microcrystalline quartz (SiO₂), likely brown/orange chalcedony or agate

Chrysocolla Cuprite (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)) — mineral composite

Chrysocolla Cuprite

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)

mineral composite

Bort or Carbonado (C - Polycrystalline Diamond) — mineral

Bort or Carbonado

C - Polycrystalline Diamond

Yellow Quartz (Citrine or Yellow Jasper) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Yellow Quartz (Citrine or Yellow Jasper)

Silicon Dioxide (SiO2) with iron impurities

Clear quartz crystal point (Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal) — mineral

Clear quartz crystal point

Quartz (silicon dioxide, SiO₂), likely a polished or cut crystal

Citrine Quartz (Silicon Dioxide (SiO2) with ferric iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with ferric iron impurities

Citrine (Silicon Dioxide (SiO2) with iron impurities) — gemstone

Citrine

Silicon Dioxide (SiO2) with iron impurities

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire (Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material) — gemstone

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire

Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material