Rock Identifier

Category

Synthetic (Not A Natural Rock)

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

Learn about Synthetic (Not A Natural Rock) in the encyclopedia

Asphalt Rock

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Chalk

Zircon

Obsidian

Kimberlite

Emerald in Matrix

Emerald in Matrix

Tripolite

Guano

Halite

Aquamarine Matrix

Aquamarine Matrix

Rock Salt

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Yellow calcite (tumbled honey or lemon calcite) (Calcite, calcium carbonate (CaCO₃), likely a yellow/orange calcite variety) — mineral

Yellow calcite (tumbled honey or lemon calcite)

Calcite, calcium carbonate (CaCO₃), likely a yellow/orange calcite variety

Bornite (Copper Iron Sulfide (Cu5FeS4)) — mineral

Bornite

Copper Iron Sulfide (Cu5FeS4)

Marble (Metamorphic Limestone (Calcite, CaCO3)) — metamorphic

Marble

Metamorphic Limestone (Calcite, CaCO3)

White quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

White quartz pebble

Quartz (silicon dioxide, SiO₂)

Rough Emerald (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — gemstone

Rough Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Diamond and Gold Jewelry (Carbon (Diamond) / Au (Gold)) — gemstone

Diamond and Gold Jewelry

Carbon (Diamond) / Au (Gold)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Shiva's Eye (Cat's Eye Shell) (Operculum of Turbo marmoratus) — fossil

Shiva's Eye (Cat's Eye Shell)

Operculum of Turbo marmoratus

Coarse Sand and River Gravel (Siliciclastic Sediment (primarily Quartz and Feldspar)) — sedimentary

Coarse Sand and River Gravel

Siliciclastic Sediment (primarily Quartz and Feldspar)

Pearl (Biogenic CaCO3 (Aragonite and Calcite)) — mineral

Pearl

Biogenic CaCO3 (Aragonite and Calcite)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Dyed Quartzite (Tumbled Metamorphosed Quartz (SiO2) with artificial pigment) — metamorphic

Dyed Quartzite

Tumbled Metamorphosed Quartz (SiO2) with artificial pigment

Dyed Fuchsia Tiger’s Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Dyed Fuchsia Tiger’s Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Blue Topaz (Al2SiO4(F,OH)2 (Aluminum silicate fluoride hydroxide)) — gemstone

Blue Topaz

Al2SiO4(F,OH)2 (Aluminum silicate fluoride hydroxide)

Quartz (Citrine variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine variety)

Silicon Dioxide (SiO2)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O

Native Gold Nugget (Native Gold (Au)) — mineral

Native Gold Nugget

Native Gold (Au)

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Polished carnelian agate (Chalcedony (microcrystalline quartz), SiO₂, orange iron-oxide variety) — gemstone

Polished carnelian agate

Chalcedony (microcrystalline quartz), SiO₂, orange iron-oxide variety

Chalcopyrite (CuFeS2) — mineral

Chalcopyrite

CuFeS2

Green Aventurine (Quartzite (Silicon Dioxide, SiO2 + Fuchsite)) — metamorphic

Green Aventurine

Quartzite (Silicon Dioxide, SiO2 + Fuchsite)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Covellite (Covellite (CuS)) — mineral

Covellite

Covellite (CuS)

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

Quartz (Smoky/Milky variety)

Silicon Dioxide (SiO2)

Bort or Carbonado (C - Polycrystalline Diamond) — mineral

Bort or Carbonado

C - Polycrystalline Diamond

Raw quartz crystal (Quartz (silicon dioxide, SiO₂), likely milky or included quartz) — mineral

Raw quartz crystal

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

Heat-Treated Citrine (Silicon Dioxide (SiO2)) — mineral

Heat-Treated Citrine

Silicon Dioxide (SiO2)

Magnetite (Octahedral Crystal) (Magnetite (Fe3O4)) — mineral

Magnetite (Octahedral Crystal)

Magnetite (Fe3O4)

Citrine Quartz / Yellow Quartz Pebbles (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz / Yellow Quartz Pebbles

Silicon Dioxide (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Gold Nugget / Gold-bearing Quartz (Native Gold (Au)) — mineral

Gold Nugget / Gold-bearing Quartz

Native Gold (Au)

Smoky Quartz (Quartz (Silicon Dioxide) - SiO2) — mineral

Smoky Quartz

Quartz (Silicon Dioxide) - SiO2

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

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

Blue Chalcedony (Agate)

Silicon Dioxide (SiO2)

Tumbled pink quartz (probable rose quartz) (Quartz, silicon dioxide (SiO₂), likely rose quartz) — mineral

Tumbled pink quartz (probable rose quartz)

Quartz, silicon dioxide (SiO₂), likely rose quartz

Blue Agate (Dyed or Treated Chalcedony) (Silicon Dioxide (SiO2), microcrystalline quartz variety) — mineral

Blue Agate (Dyed or Treated Chalcedony)

Silicon Dioxide (SiO2), microcrystalline quartz variety