Rock Identifier

Category

Metamorphic And Igneous Rocks

Browse metamorphic and igneous rocks specimens identified by the Rock Identifier community.

Learn about Metamorphic And Igneous Rocks in the encyclopedia

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Hornblende Schist

Hornblende Schist

Chlorite Schist

Chlorite Schist

Talc Schist

Talc-carbonate Rock

Talc-carbonate Rock

Epidosite

Feldspar

Chromite

Schorlomite

Goldmanite

Kokchetavite

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Quartz (Smoky/Clear variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Clear variety)

Silicon Dioxide (SiO2)

Ferruginous Quartz (Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)) — mineral

Ferruginous Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Sandstone (Micaceous Sandstone) (Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)) — sedimentary

Sandstone (Micaceous Sandstone)

Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)

Ruby (Raw Corundum) (Corundum (Al2O3:Cr)) — mineral

Ruby (Raw Corundum)

Corundum (Al2O3:Cr)

Yellow faceted gemstone, likely citrine or yellow sapphire (Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)) — gemstone

Yellow faceted gemstone, likely citrine or yellow sapphire

Uncertain; probable quartz (SiO₂) or corundum (Al₂O₃)

Blue Sapphire (Corundum (Al2O3) with traces of Iron and Titanium) — mineral

Blue Sapphire

Corundum (Al2O3) with traces of Iron and Titanium

Blue faceted gemstone, likely synthetic sapphire or blue glass (Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually) — gemstone

Blue faceted gemstone, likely synthetic sapphire or blue glass

Corundum (Al₂O₃) if sapphire; identity cannot be confirmed visually

Calcite (Calcite (CaCO3)) — Mineral

Calcite

Calcite (CaCO3)

White quartz-rich pebble (Likely quartzite or milky-quartz pebble (SiO₂)) — mineral

White quartz-rich pebble

Likely quartzite or milky-quartz pebble (SiO₂)

Weathered quartz-rich metamorphic rock, likely quartzite or gneiss (Quartzite/gneiss; chiefly quartz (SiO₂) with feldspar and mica/iron oxides) — metamorphic

Weathered quartz-rich metamorphic rock, likely quartzite or gneiss

Quartzite/gneiss; chiefly quartz (SiO₂) with feldspar and mica/iron oxides

Milky quartz (Quartz (SiO₂), likely massive milky quartz with minor iron-oxide staining and inclusions) — mineral

Milky quartz

Quartz (SiO₂), likely massive milky quartz with minor iron-oxide staining and inclusions

Polished green-inclusion stone, likely chlorite-included quartz (Quartz (SiO₂) with chlorite inclusions; exact identification is uncertain from the photograph) — mineral

Polished green-inclusion stone, likely chlorite-included quartz

Quartz (SiO₂) with chlorite inclusions; exact identification is uncertain from the photograph

Milky quartz vein fragment (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz vein fragment

Quartz, silicon dioxide (SiO₂)

Faceted yellow gemstone, likely citrine (Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing) — gemstone

Faceted yellow gemstone, likely citrine

Citrine (quartz), SiO₂; possibly yellow sapphire or synthetic glass without testing

Blue Sapphire and Diamond (Set in Metal) (Corundum (Al2O3) and Diamond (C)) — mineral

Blue Sapphire and Diamond (Set in Metal)

Corundum (Al2O3) and Diamond (C)

Green Calcite (Calcite (CaCO3)) — mineral

Green Calcite

Calcite (CaCO3)

Sapphire (Corundum variety) (Sapphire (Al₂O₃)) — Mineral

Sapphire (Corundum variety)

Sapphire (Al₂O₃)

Gold (Processed) (Gold (Au)) — Metal (Elemental Mineral)

Gold (Processed)

Gold (Au)

Metal (Elemental Mineral)

Calcite (or Alabaster, if truly carved) (Calcium Carbonate (CaCO3)) — Mineral/Rock

Calcite (or Alabaster, if truly carved)

Calcium Carbonate (CaCO3)

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30) — mineral

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

Likely milky quartz fragment (Quartz (SiO₂)) — mineral

Likely milky quartz fragment

Quartz (SiO₂)

Milky Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz (Pink/Rose or Hematinoid Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Pink/Rose or Hematinoid Quartz)

Silicon Dioxide (SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Quartz fragment (Quartz (silicon dioxide, SiO₂), likely milky or smoky quartz) — mineral

Quartz fragment

Quartz (silicon dioxide, SiO₂), likely milky or smoky quartz

Sugilite (KNa2(Fe,Mn,Al)2Si12O30) — mineral

Sugilite

KNa2(Fe,Mn,Al)2Si12O30

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Green Mica (Fuchsinite or Muscovite, KAl2(AlSi3O10)(OH)2) — mineral

Green Mica

Fuchsinite or Muscovite, KAl2(AlSi3O10)(OH)2

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Green Quartz (Silicon Dioxide (SiO2)) — mineral

Green Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30) — mineral

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

White Calcite (Calcium Carbonate (CaCO3)) — mineral

White Calcite

Calcium Carbonate (CaCO3)

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30) — mineral

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Ruby (Corundum (Al2O3)) — gemstone

Ruby

Corundum (Al2O3)

Labradorite (Labradorite (Ca, Na)(Al, Si)4O8) — mineral

Labradorite

Labradorite (Ca, Na)(Al, Si)4O8

Labradorite ((Ca,Na)(Al,Si)4O8) — mineral

Labradorite

(Ca,Na)(Al,Si)4O8

Pink Quartz (Silicon Dioxide (SiO2)) — mineral

Pink Quartz

Silicon Dioxide (SiO2)

Orange Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)