Rock Identifier

Community gallery

All rocks & minerals

Every specimen the Rock Identifier community has discovered, from desert agates to deep-sea basalts.

Explore the rock & mineral encyclopedia

Acanthite

Achroite

Adinole

Adirondack Garnet

Adirondack Garnet

Adularia

Agate

Albite

Albitite

Alexandrite

Alkali Feldspar

Alkali Feldspar

Almandine Garnet

Almandine Garnet

Alnöite

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Porphyritic Basalt or Porphyry (Porphyritic Igneous Rock) — igneous

Porphyritic Basalt or Porphyry

Porphyritic Igneous Rock

Septarian Nodule (Septarian Concretion (Calcite, Aragonite, Limestone)) — sedimentary

Septarian Nodule

Septarian Concretion (Calcite, Aragonite, Limestone)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Agate (Silicon Dioxide (Chalcedony), SiO2) — gemstone

Agate

Silicon Dioxide (Chalcedony), SiO2

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Scoria (Vesicular Mafic Igneous Rock) — igneous

Scoria

Vesicular Mafic Igneous Rock

Flint / Chert (Microcrystalline quartz (SiO2)) — sedimentary

Flint / Chert

Microcrystalline quartz (SiO2)

Meteorite (Chondrite / Iron-Nickel Meteorite fragment) — meteorite

Meteorite

Chondrite / Iron-Nickel Meteorite fragment

Fossilized Bone (Permineralized Bone (Vertebrate Fossil)) — fossil

Fossilized Bone

Permineralized Bone (Vertebrate Fossil)

Agate Nodule / Chalcedony (Silicon Dioxide (SiO2)) — sedimentary

Agate Nodule / Chalcedony

Silicon Dioxide (SiO2)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Agate (Silicon Dioxide (SiO2)) — sedimentary

Agate

Silicon Dioxide (SiO2)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Fulgurite (Lechatelierite) — mineral

Fulgurite

Lechatelierite

Basalt (Extrusive igneous rock) — igneous

Basalt

Extrusive igneous rock

Shark Tooth Fossil (Selachii fossil) — fossil

Shark Tooth Fossil

Selachii fossil

Slate (Metamorphic Pelitic Rock) — metamorphic

Slate

Metamorphic Pelitic Rock

Sandstone (Sedimentary Rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite/Arkose)

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

Chert (Flint)

Microcrystalline quartz (SiO2)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Shiva's Eye (Cat's Eye Shell) (Operculum of Turbo marmoratus) — fossil

Shiva's Eye (Cat's Eye Shell)

Operculum of Turbo marmoratus

Scallop Shell Fossil (Pecten sp.) — fossil

Scallop Shell Fossil

Pecten sp.

Chert / Flint Nodular Fragment (Microcrystalline quartz (SiO2)) — sedimentary

Chert / Flint Nodular Fragment

Microcrystalline quartz (SiO2)

Native American Hammerstone / Pitted Stone (Modified lithic artifact (often quartzite, basalt, or granite)) — artifact / sedimentary or igneous rock

Native American Hammerstone / Pitted Stone

Modified lithic artifact (often quartzite, basalt, or granite)

artifact / sedimentary or igneous rock

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Granite (Granite) — igneous

Granite

Granite

Granite (Phaneritic Igneous Rock) — igneous

Granite

Phaneritic Igneous Rock

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Diorite (Diorite (Plagioclase feldspar and amphibole/biotite)) — igneous

Diorite

Diorite (Plagioclase feldspar and amphibole/biotite)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Leopardite (Porphyritic Quartz Monzonite or Rhyolite) — igneous

Leopardite

Porphyritic Quartz Monzonite or Rhyolite

Petoskey Stone (Hexagonaria percarinata) — fossil

Petoskey Stone

Hexagonaria percarinata

Shark Tooth Fossil (Vertebrate fossilized tooth (Chondrichthyes)) — fossil

Shark Tooth Fossil

Vertebrate fossilized tooth (Chondrichthyes)