Rock Identifier

Category

Synthetic (Not A Natural Rock)

Browse synthetic (not a natural rock) specimens identified by the Rock Identifier community.

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

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

Agate

Agate (Silicon Dioxide, SiO2)

Blue Quartzite (Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)) — metamorphic

Blue Quartzite

Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)

Red Quartz (Druzy) (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Quartz (Druzy)

Silicon Dioxide (SiO2) with Hematite inclusions

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Crushed Limestone (Calcite-rich Sedimentary Rock (CaCO3)) — sedimentary

Crushed Limestone

Calcite-rich Sedimentary Rock (CaCO3)

Yellow Quartz (Citrine-colored Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine-colored Quartz Pebble)

Silicon Dioxide (SiO2)

Fluorite Tower (Fluorite (Calcium Fluoride - CaF2)) — mineral

Fluorite Tower

Fluorite (Calcium Fluoride - CaF2)

Fluorite (Green) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Green)

Calcium Fluoride (CaF2)

Gold flakes (Native Gold (Au)) — mineral

Gold flakes

Native Gold (Au)

Carnelian (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Orthoclase Feldspar (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Malachite (Copper carbonate hydroxide, Cu2CO3(OH)2) — mineral

Malachite

Copper carbonate hydroxide, Cu2CO3(OH)2

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz (specifically Milky or Rose Quartz variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Milky or Rose Quartz variant)

Silicon Dioxide (SiO2)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Pink Opal (Amorphous Hydrous Silica (SiO2·nH2O)) — mineral

Pink Opal

Amorphous Hydrous Silica (SiO2·nH2O)

Basalt (Mafic Volcanic Rock (composed of Plagioclase Feldspar and Pyroxene)) — igneous

Basalt

Mafic Volcanic Rock (composed of Plagioclase Feldspar and Pyroxene)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Red Sandstone (Arenite (with Iron Oxide / Hematite cementation)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Limestone with Quartz or Calcite Veining (Calcium Carbonate (CaCO3) matrix with SiO2 or CaCO3 inclusions) — sedimentary

Limestone with Quartz or Calcite Veining

Calcium Carbonate (CaCO3) matrix with SiO2 or CaCO3 inclusions

Chevron Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Chevron Amethyst

Silicon Dioxide (SiO2) with iron impurities

Black Tourmaline in Quartz (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) in Silicon Dioxide (SiO2)) — igneous

Black Tourmaline in Quartz

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) in Silicon Dioxide (SiO2)

Moss Agate (Silicon dioxide (SiO2) with inclusions of hornblende or chlorite) — mineral

Moss Agate

Silicon dioxide (SiO2) with inclusions of hornblende or chlorite

Amazonite (Potassium Feldspar (KAlSi3O8)) — mineral

Amazonite

Potassium Feldspar (KAlSi3O8)

Basalt (Basalt (Composition primarily Plagioclase feldspar, Pyroxene, and Olivine)) — igneous

Basalt

Basalt (Composition primarily Plagioclase feldspar, Pyroxene, and Olivine)

Granite Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Moss Agate (Chalcedony (SiO2) with inclusions of manganese or iron oxide) — mineral

Moss Agate

Chalcedony (SiO2) with inclusions of manganese or iron oxide

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

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Yellow Jasper (Silicon Dioxide (SiO2) - variety of Chalcedony) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) - variety of Chalcedony

White Agate (Chalcedony) (Chalcedony (SiO2)) — mineral

White Agate (Chalcedony)

Chalcedony (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Pyrite in Matrix (likely Quartz or Schist matrix) (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix (likely Quartz or Schist matrix)

Iron Sulfide (FeS2)

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Sandstone (with Iron Oxide staining) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (with Iron Oxide staining)

Arenite (primarily SiO2 with Fe2O3 staining)

Amazonite (K(AlSi3O8) - Potassium Feldspar (Microcline variant)) — mineral

Amazonite

K(AlSi3O8) - Potassium Feldspar (Microcline variant)

Amethyst (Amethyst (SiO2 with Iron impurities)) — mineral

Amethyst

Amethyst (SiO2 with Iron impurities)

Amazonite (Triklinic Potassium Feldspar (KAlSi3O8)) — mineral

Amazonite

Triklinic Potassium Feldspar (KAlSi3O8)

Amazonite (Amazonstone (KAlSi3O8)) — mineral

Amazonite

Amazonstone (KAlSi3O8)

Jasper (Jasper (Silicate - SiO2)) — sedimentary

Jasper

Jasper (Silicate - SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist