Rock Identifier

Category

Metamorphic Or Igneous

Browse metamorphic or igneous specimens identified by the Rock Identifier community.

Learn about Metamorphic Or Igneous in the encyclopedia

Carbonatite

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Metagabbro

Milk Quartz (White) and Yellow Aventurine (Yellow) (Silicon Dioxide (SiO2)) — mineral

Milk Quartz (White) and Yellow Aventurine (Yellow)

Silicon Dioxide (SiO2)

Quartz with Mafic/Chlorite Veins (Silicon Dioxide (SiO2) with Chlorite/Epidote cross-veining) — metamorphic

Quartz with Mafic/Chlorite Veins

Silicon Dioxide (SiO2) with Chlorite/Epidote cross-veining

Ruby and Sapphire Cluster Ring (Corundum (Al2O3)) — gemstone

Ruby and Sapphire Cluster Ring

Corundum (Al2O3)

K2 Jasper (K2 Stone) (Azurite in Granite / Quartzite) — metamorphic

K2 Jasper (K2 Stone)

Azurite in Granite / Quartzite

Quartz with Iron Oxide Inclusions (Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Oxide Inclusions

Silicon Dioxide (SiO2)

Pink Calcite (Calcium Carbonate (CaCO3)) — mineral

Pink Calcite

Calcium Carbonate (CaCO3)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

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

Green Aventurine

Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Black Sapphire (Corundum (Al2O3)) — gemstone

Black Sapphire

Corundum (Al2O3)

Quartz in Matrix (or Quartz Vein Rock) (Silicon Dioxide (SiO2) with host rock) — igneous

Quartz in Matrix (or Quartz Vein Rock)

Silicon Dioxide (SiO2) with host rock

Granite cobble (Granite (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite cobble

Granite (composed primarily of Quartz, Feldspar, and Mica)

Ruby (in a ring setting) (Corundum (Al2O3:Cr)) — gemstone

Ruby (in a ring setting)

Corundum (Al2O3:Cr)

Diamond and Sapphire (Carbon (Diamond, C) and Aluminum Oxide (Sapphire, Al2O3)) — gemstone

Diamond and Sapphire

Carbon (Diamond, C) and Aluminum Oxide (Sapphire, Al2O3)

Blue Sapphire (Corundum (Al2O3 with trace Titanium/Iron)) — mineral

Blue Sapphire

Corundum (Al2O3 with trace Titanium/Iron)

Black Onyx (Silicon Dioxide (SiO2) with parallel banding) — mineral

Black Onyx

Silicon Dioxide (SiO2) with parallel banding

Quartz Vein Rock (Silicon Dioxide (SiO2)) — mineral

Quartz Vein Rock

Silicon Dioxide (SiO2)

Tumbled black tourmaline (Schorl tourmaline, NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Tumbled black tourmaline

Schorl tourmaline, NaFe3Al6(BO3)3Si6O18(OH)4

Rutilated Quartz (Rutile in Quartz (SiO2 with TiO2 inclusions)) — mineral

Rutilated Quartz

Rutile in Quartz (SiO2 with TiO2 inclusions)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Rutilated Quartz (Quartz with Rutile inclusions (SiO2 with TiO2)) — mineral

Rutilated Quartz

Quartz with Rutile inclusions (SiO2 with TiO2)

Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Parti Sapphire (Corundum (Al2O3)) — mineral

Parti Sapphire

Corundum (Al2O3)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Ruby (Pinkish-Red) (Corundum (Al2O3 with Chromium trace)) — mineral

Ruby (Pinkish-Red)

Corundum (Al2O3 with Chromium trace)

Faceted yellow gemstone ring (Likely yellow sapphire (corundum), but exact identification requires testing; alternatives include citrine, chrysoberyl, or treated diamond.) — gemstone

Faceted yellow gemstone ring

Likely yellow sapphire (corundum), but exact identification requires testing; alternatives include citrine, chrysoberyl, or treated diamond.

Milky Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — Mineral

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Quartz with Pyrite (Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)) — mineral

Quartz with Pyrite

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)

Raw Emerald (Emerald Beryl) (Beryl (Be3Al2Si6O18) with chromium/vanadium impurities) — mineral

Raw Emerald (Emerald Beryl)

Beryl (Be3Al2Si6O18) with chromium/vanadium impurities

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Yellow Sapphire (Corundum (Al2O3)) — mineral

Yellow Sapphire

Corundum (Al2O3)

Rough Gemstone Grains (Mixed Sapphires and Quartz) (Corundum (Al2O3) and Quartz (SiO2)) — mineral

Rough Gemstone Grains (Mixed Sapphires and Quartz)

Corundum (Al2O3) and Quartz (SiO2)

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

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Auriferous Quartz or Pyritic Ore (Iron Pyrite (FeS2) or Native Gold (Au) in Matrix) — mineral

Auriferous Quartz or Pyritic Ore

Iron Pyrite (FeS2) or Native Gold (Au) in Matrix

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

Green Aventurine

Quartz with Fuchsite inclusions (SiO2)

Quartz Pebble (Smoky Quartz / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Smoky Quartz / Chalcedony)

Silicon Dioxide (SiO2)

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Rutilated Quartz (with Garnet pendant) (Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions) — mineral

Rutilated Quartz (with Garnet pendant)

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Black Sapphire (Basaltic Blue Sapphire) (Corundum (Al2O3)) — mineral

Black Sapphire (Basaltic Blue Sapphire)

Corundum (Al2O3)

Quartz / Calcite Vein Rock (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)) — mineral

Quartz / Calcite Vein Rock

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)