Rock Identifier

Category

Marble

Browse marble specimens identified by the Rock Identifier community.

Ruby (in costume jewelry context) (Corundum (Al2O3) with Chromium impurities) — mineral

Ruby (in costume jewelry context)

Corundum (Al2O3) with Chromium impurities

Sapphire (Raw/Rough) (Corundum (Al2O3)) — mineral

Sapphire (Raw/Rough)

Corundum (Al2O3)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Rough Green Sapphire (Corundum) (Corundum (Al2O3 - Aluminum Oxide with trace elements)) — mineral

Rough Green Sapphire (Corundum)

Corundum (Al2O3 - Aluminum Oxide with trace elements)

Lapis Lazuli (polished cabochon) (Lazurite-rich metamorphic rock (approx. Na6Ca2Al6Si6O24(SO4,S,Cl)2)) — metamorphic

Lapis Lazuli (polished cabochon)

Lazurite-rich metamorphic rock (approx. Na6Ca2Al6Si6O24(SO4,S,Cl)2)

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Lapis Lazuli (Lapis Lazuli (aggregate of Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (aggregate of Lazurite, Calcite, and Pyrite)

Sapphire (Corundum (Al2O3)) — Mineral

Sapphire

Corundum (Al2O3)

Banded Calcite (Green Onyx) (Calcium Carbonate (CaCO3)) — sedimentary

Banded Calcite (Green Onyx)

Calcium Carbonate (CaCO3)

Blue Sapphire (Corundum (Al2O3) with iron and titanium impurities) — mineral

Blue Sapphire

Corundum (Al2O3) with iron and titanium impurities

Lapis Lazuli (Complex metamorphic rock containing Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl)2), Calcite, and Pyrite) — metamorphic

Lapis Lazuli

Complex metamorphic rock containing Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl)2), Calcite, and Pyrite

Rough Corundum (Sapphire/Ruby mixture) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Rough Corundum (Sapphire/Ruby mixture)

Corundum (Aluminum Oxide, Al2O3)

Lapis Lazuli (Lapis Lazuli (Primary mineral: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Primary mineral: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Honey Calcite (Orange Onyx) (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite (Orange Onyx)

Calcium Carbonate (CaCO3)

Fluorite, Turquoise, and Calcite set (Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)) — mineral

Fluorite, Turquoise, and Calcite set

Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)

Corundum (Sapphire in Host Rock) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Corundum (Sapphire in Host Rock)

Corundum (Aluminum Oxide, Al2O3)

Rough Ruby (Corundum (Al2O3) with Chromium traces) — mineral

Rough Ruby

Corundum (Al2O3) with Chromium traces

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Lapis Lazuli (Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite and other associated minerals)) — metamorphic

Lapis Lazuli

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite and other associated minerals)

Lapis Lazuli (Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)

Larimar (Pectolite (NaCa2Si3O8(OH))) — mineral

Larimar

Pectolite (NaCa2Si3O8(OH))

Fossiliferous Limestone (Red Marble) (Bioclastic Limestone (CaCO3)) — sedimentary

Fossiliferous Limestone (Red Marble)

Bioclastic Limestone (CaCO3)

Quartz / Quartzite (Quartzite (primarily Silicon Dioxide, SiO2)) — metamorphic

Quartz / Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Quartzite (Quartzite) — metamorphic

Quartzite

Quartzite

Honey Calcite (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Banded Calcite) (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite (Banded Calcite)

Calcium Carbonate (CaCO3)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Sugar Quartz) (Quartzite (primarily SiO2)) — metamorphic

Quartzite (Sugar Quartz)

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Sodalite (Sodalite [Na8(Al6Si6O24)Cl2]) — mineral

Sodalite

Sodalite [Na8(Al6Si6O24)Cl2]

Cream Marble (Speckled) (Metamorphosed Limestone (mainly CaCO3)) — metamorphic

Cream Marble (Speckled)

Metamorphosed Limestone (mainly CaCO3)

Serpentinite (Serpentinite (complex of lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (complex of lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Grey Quartzite Pebble (Quartzite (primarily SiO2 - Silicon Dioxide)) — metamorphic

Grey Quartzite Pebble

Quartzite (primarily SiO2 - Silicon Dioxide)

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite Pebbles (Quartzite (SiO2)) — metamorphic

Quartzite Pebbles

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Lapis Lazuli (Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite) — metamorphic

Lapis Lazuli

Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite