Rock Identifier

Category

Synthetic (Not A Natural Rock)

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

Gold and Diamond (Native Gold (Au) and Diamond (C)) — mineral

Gold and Diamond

Native Gold (Au) and Diamond (C)

Carnelian (Red Chalcedony) (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Carnelian (Red Chalcedony)

Silicon Dioxide (SiO2) with iron oxide impurities

Amazonite (K(AlSi3O8) - Microcline) — mineral

Amazonite

K(AlSi3O8) - Microcline

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

White Chalcedony (Agate)

Silicon Dioxide (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Basalt River Stone (Tumbled) (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt River Stone (Tumbled)

Basalt (Mafic Extrusive Igneous Rock)

Painted Pet Rock (Quartzite/Sandstone base) (Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments) — sedimentary

Painted Pet Rock (Quartzite/Sandstone base)

Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments

Magnetite (Small Granule) (Magnetite (Fe3O4)) — mineral

Magnetite (Small Granule)

Magnetite (Fe3O4)

Turquoise (Blue Howlite / Magnesite imitation) (CuAl6(PO4)4(OH)8·4H2O (for natural Turquoise); Ca2B5SiO9(OH)5 (for Howlite)) — mineral

Turquoise (Blue Howlite / Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (for natural Turquoise); Ca2B5SiO9(OH)5 (for Howlite)

Note regarding baguette production (not a rock) (Digital text image - Somali language) — not a rock

Note regarding baguette production (not a rock)

Digital text image - Somali language

Ruby and Diamond in Gold Setting (Corundum (Al2O3) and Diamond (C)) — mineral

Ruby and Diamond in Gold Setting

Corundum (Al2O3) and Diamond (C)

Granite (Granite (a felsic intrusive igneous rock)) — Igneous

Granite

Granite (a felsic intrusive igneous rock)

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

Fluorite (Green)

Fluorite (Calcium Fluoride, CaF2)

Granodiorite (Riverbed Cobble) (Granodiorite) — igneous

Granodiorite (Riverbed Cobble)

Granodiorite

Green Banded Agate (Agate (Variety of Chalcedony/Quartz), SiO2) — mineral

Green Banded Agate

Agate (Variety of Chalcedony/Quartz), SiO2

Magnetite (Lodestone variety) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Unable to identify - Image contains non-geological items — N/A

Unable to identify - Image contains non-geological items

Lapis Lazuli (Low Grade) (Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2)) — metamorphic

Lapis Lazuli (Low Grade)

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Basalt (Polished River Stone) (Aphanitic Mafic Igneous Rock) — igneous

Basalt (Polished River Stone)

Aphanitic Mafic Igneous Rock

Basalt (River Pebble) (Extrusive mafic igneous rock) — igneous

Basalt (River Pebble)

Extrusive mafic igneous rock

Aquamarine with Ruby Accent (Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)) — mineral

Aquamarine with Ruby Accent

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)

Black River Stone (likely Basalt or Chert) (Basalt (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Black River Stone (likely Basalt or Chert)

Basalt (primarily Plagioclase Feldspar and Pyroxene)

Quartzite with Quartz Veining (Quartzite (primarily SiO2)) — metamorphic

Quartzite with Quartz Veining

Quartzite (primarily SiO2)

Limestone (Concretionary or Tufa) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (Concretionary or Tufa)

Calcium Carbonate (CaCO3)

Magnetite / Iron Ore (Magnetite (Fe3O4)) — mineral

Magnetite / Iron Ore

Magnetite (Fe3O4)

Corundum (Ruby variety) (Aluminium oxide (Al2O3)) — mineral

Corundum (Ruby variety)

Aluminium oxide (Al2O3)

Spessartine Garnet (Manganese aluminum silicate (Mn2+3Al2(SiO4)3)) — mineral

Spessartine Garnet

Manganese aluminum silicate (Mn2+3Al2(SiO4)3)

Orange Quartzite / Quartz (Silicon Dioxide (SiO2) with iron oxide inclusions) — metamorphic

Orange Quartzite / Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions

Granite River Rock (Phaneritic Felsic Igneous Rock (Granite)) — igneous

Granite River Rock

Phaneritic Felsic Igneous Rock (Granite)

Nephrite Jade (Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)) — Mineral

Nephrite Jade

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Carnelian (Carnelian Agate (SiO2)) — mineral

Carnelian

Carnelian Agate (SiO2)

Sandstone (likely Graywacke or Arkose variant) (Clastic Sedimentary Rock (SiO2 based)) — sedimentary

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 based)

Corundum (Sapphire/Ruby in Matrix) (Corundum (Al2O3)) — mineral

Corundum (Sapphire/Ruby in Matrix)

Corundum (Al2O3)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Pyrite in Matrix (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite in Matrix (Fool's Gold)

Iron Disulfide (FeS2)

Dalmatian Jasper (Peralkaline rhyolite with Arfvedsonite inclusions) — igneous

Dalmatian Jasper

Peralkaline rhyolite with Arfvedsonite inclusions

Yellow Ochre / Limonite (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Yellow Ochre / Limonite

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

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

Carnelian Agate

Chalcedony (Silicon Dioxide, SiO2)