Rock Identifier

Category

Metamorphic (Pseudo Igneous)

Browse metamorphic (pseudo igneous) specimens identified by the Rock Identifier community.

Gneiss (specifically a Banded Gneiss pebble) (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss (specifically a Banded Gneiss pebble)

Gneiss (High-grade Regional Metamorphic Rock)

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

Quartz

Quartz (SiO2 - Silicon Dioxide)

Schist (N/A (a rock type, not a mineral formula)) — metamorphic

Schist

N/A (a rock type, not a mineral formula)

Pebble (Clast (specifically a granule or small pebble)) — Sedimentary

Pebble

Clast (specifically a granule or small pebble)

Citrine Quartz (Crystalline Silicon Dioxide (SiO2) with Ferric Iron impurities) — mineral

Citrine Quartz

Crystalline Silicon Dioxide (SiO2) with Ferric Iron impurities

Amethyst (Amethyst (Silicon Dioxide, SiO2)) — mineral

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Man-made Green Quartz (Lab-grown or Treated) (Silicon Dioxide (SiO2) with artificial coloration) — mineral

Man-made Green Quartz (Lab-grown or Treated)

Silicon Dioxide (SiO2) with artificial coloration

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Crystal Cluster) (Silicon Dioxide (SiO2) - Quartz Variety) — mineral

Milky Quartz (Crystal Cluster)

Silicon Dioxide (SiO2) - Quartz Variety

Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (likely tumbled or naturally water-worn) (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz (likely tumbled or naturally water-worn)

Quartz (SiO₂ - Silicon Dioxide)

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Yellow Quartz (Citrine/Yellow Jasper mix) (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartz (specifically Milky Quartz/Quartzite) (Silicon Dioxide (SiO2)) — Mineral

Quartz (specifically Milky Quartz/Quartzite)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Citrine (likely Heat-Treated Amethyst) (Silicon Dioxide (SiO2)) — mineral

Citrine (likely Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Chalcopyrite (Chalcopyrite (CuFeS2)) — Mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

Basalt (Porphyritic) (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt (Porphyritic)

Basalt (Mafic Extrusive Igneous Rock)

Greenstone / Glauconitic Siltstone (Metabasalt or Glauconite-rich Sedimentary Rock) — metamorphic or sedimentary

Greenstone / Glauconitic Siltstone

Metabasalt or Glauconite-rich Sedimentary Rock

metamorphic or sedimentary

Schist (Schist (various mineralogical compositions including mica, chlorite, talc, etc.)) — Metamorphic

Schist

Schist (various mineralogical compositions including mica, chlorite, talc, etc.)

Almandine Garnet (Almandine - Fe3Al2(SiO4)3) — mineral

Almandine Garnet

Almandine - Fe3Al2(SiO4)3

Aquamarine (Beryl (Be3Al2Si6O18)) — Mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Quartz Crystal (Quartz (SiO₂)) — Mineral

Quartz Crystal

Quartz (SiO₂)

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

Citrine

Citrine (Silicon Dioxide - SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Citrine

Citrine (Silicon Dioxide - SiO2)

Quartz (Milky/Gravel variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Gravel variety)

Silicon Dioxide (SiO2)

Rough Dark Green Sapphire (Corundum (Al2O3)) — mineral

Rough Dark Green Sapphire

Corundum (Al2O3)

Moonstone (Adularia (orthoclase) or Albite (plagioclase), a potassium aluminum silicate of the feldspar group) — Mineral

Moonstone

Adularia (orthoclase) or Albite (plagioclase), a potassium aluminum silicate of the feldspar group

Quartz (possibly milky quartz) (Quartz (Silica; SiO₂)) — Mineral

Quartz (possibly milky quartz)

Quartz (Silica; SiO₂)

Quartz with Mica (Schist/Pegmatite fragment) (Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)) — igneous/metamorphic

Quartz with Mica (Schist/Pegmatite fragment)

Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)

igneous/metamorphic

Yellow Quartz (Citrine/Yellow Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine/Yellow Chalcedony)

Silicon Dioxide (SiO2)

Gneiss (Gneiss (a type of metamorphic rock)) — Metamorphic Rock

Gneiss

Gneiss (a type of metamorphic rock)

Metamorphic Rock

Greenstone / Diabase Porphyry (Porphyritic Diabase (Micro-gabbro)) — Igneous

Greenstone / Diabase Porphyry

Porphyritic Diabase (Micro-gabbro)

Gneiss (Metamorphic Rock) (Gneiss) — metamorphic

Gneiss (Metamorphic Rock)

Gneiss

Diorite (Gneissic) (Diorite) — igneous

Diorite (Gneissic)

Diorite

Pink Granite (Gneissic transition) (Pink Biotite Granite) — igneous

Pink Granite (Gneissic transition)

Pink Biotite Granite

Lapis Lazuli (Na6Ca2(Al6Si6O24)(S,SO4,Cl)1-2 (primarily containing Lazurite with inclusions of Calcite and Pyrite)) — metamorphic

Lapis Lazuli

Na6Ca2(Al6Si6O24)(S,SO4,Cl)1-2 (primarily containing Lazurite with inclusions of Calcite and Pyrite)

Chrome Diopside (Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities) — mineral

Chrome Diopside

Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities

Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)