Rock Identifier

Category

Synthetic (Not A Natural Rock)

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

Diamond (or Cubic Zirconia imitation) (Carbon (C) - Native Element) — mineral

Diamond (or Cubic Zirconia imitation)

Carbon (C) - Native Element

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

Magnetite (Lodestone)

Magnetite (Fe3O4)

Howlite (Tumbled) (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite (Tumbled)

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Pearl (Calcium carbonate (CaCO3) + organic conchiolin (Biogenic Mineral)) — mineral

Pearl

Calcium carbonate (CaCO3) + organic conchiolin (Biogenic Mineral)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Laterite (Laterite (primarily composed of hydrated oxides of iron and aluminum)) — Sedimentary Rock (as a residual soil/rock, it's often considered a type of sedimentary rock due to its formation from weathering, though it can cross into soil science)

Laterite

Laterite (primarily composed of hydrated oxides of iron and aluminum)

Sedimentary Rock (as a residual soil/rock, it's often considered a type of sedimentary rock due to its formation from weathering, though it can cross into soil science)

Granite (Granite (a common igneous rock)) — igneous

Granite

Granite (a common igneous rock)

Ironstone Concretion (likely) (Goethite/Hematite/Limonite cemented sediment) — Sedimentary Rock

Ironstone Concretion (likely)

Goethite/Hematite/Limonite cemented sediment

Sedimentary Rock

Diamond (or Cubic Zirconia simulant) (Carbon (C) or Zirconium Dioxide (ZrO2)) — mineral

Diamond (or Cubic Zirconia simulant)

Carbon (C) or Zirconium Dioxide (ZrO2)

Turquoise (Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Green Aventurine (likely) (Silicon dioxide (SiO2) with fuchsitemica inclusions) — Mineral (specifically a variety of Quartz)

Green Aventurine (likely)

Silicon dioxide (SiO2) with fuchsitemica inclusions

Mineral (specifically a variety of Quartz)

Note regarding image quality — Indeterminate

Note regarding image quality

Rutilated Quartz (SiO2 with TiO2 inclusions) — Mineral

Rutilated Quartz

SiO2 with TiO2 inclusions

Amethyst (Quartz (SiO2) with trace iron impurities) — Mineral

Amethyst

Quartz (SiO2) with trace iron impurities

Moss Agate (SiO2 (Silicon Dioxide) with dendritic inclusions) — Mineral

Moss Agate

SiO2 (Silicon Dioxide) with dendritic inclusions

Caribbean Calcite (Calcite and Aragonite (CaCO3)) — mineral

Caribbean Calcite

Calcite and Aragonite (CaCO3)

Porcelain (White Ceramic) (Mullite-bearing Vitrified Ceramic (Major phases: Mullite Al6Si2O13, Glassy Silica SiO2)) — metamorphic

Porcelain (White Ceramic)

Mullite-bearing Vitrified Ceramic (Major phases: Mullite Al6Si2O13, Glassy Silica SiO2)

Quartz (River Siltstone Quartzite Pebble) (Silicon Dioxide (SiO2)) — metamorphic

Quartz (River Siltstone Quartzite Pebble)

Silicon Dioxide (SiO2)

Granite (Granite (a plutonic rock)) — Igneous

Granite

Granite (a plutonic rock)

Asphalt / Bituminous Aggregate (Bituminous mixture (Hydrocarbon-based sediment)) — sedimentary

Asphalt / Bituminous Aggregate

Bituminous mixture (Hydrocarbon-based sediment)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

Aura Quartz (Titanium Quartz) (Titanium-coated Silicon Dioxide (SiO2 + Ti)) — mineral

Aura Quartz (Titanium Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti)

Black Pearl (Tahitian Pearl) (Aragonite / Calcite (CaCO3) with Conchiolin) — mineral

Black Pearl (Tahitian Pearl)

Aragonite / Calcite (CaCO3) with Conchiolin

Pearl (nacre) (Calcium Carbonate (mostly CaCO3 as Aragonite) and Conchiolin) — Organic Mineraloid

Pearl (nacre)

Calcium Carbonate (mostly CaCO3 as Aragonite) and Conchiolin

Organic Mineraloid

Pearl (Calcium Carbonate (Aragonite) - CaCO3) — mineral

Pearl

Calcium Carbonate (Aragonite) - CaCO3

Tiger's Eye (likely variant or dark tumble) (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye (likely variant or dark tumble)

Pseudomorph of Quartz after Crocidolite (SiO2)

Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

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

Granite

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

Rough Diamond (Diamond (pure Carbon, C)) — mineral

Rough Diamond

Diamond (pure Carbon, C)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Yellow Quartz (Rough) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Rough)

Silicon Dioxide (SiO2)

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

Yellow Quartz (Citrine-colored Quartz)

Silicon Dioxide (SiO2)

Diamond (in a cluster setting) (Crystallized Carbon (C)) — mineral

Diamond (in a cluster setting)

Crystallized Carbon (C)

Diamond (Colorless/White) (Carbon (C)) — mineral

Diamond (Colorless/White)

Carbon (C)

Diamond (Set in Jewelry) (C (Native Carbon)) — mineral

Diamond (Set in Jewelry)

C (Native Carbon)

Diamond (in jewelry setting) (Cubic Carbon (C)) — mineral

Diamond (in jewelry setting)

Cubic Carbon (C)

Halite (Himalayan Pink Salt) (Halite - NaCl (Sodium Chloride)) — Mineral (Evaporite)

Halite (Himalayan Pink Salt)

Halite - NaCl (Sodium Chloride)

Mineral (Evaporite)

Bumblebee Jasper (Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)) — igneous

Bumblebee Jasper

Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)

Chrysoprase (Chrysoprase (a variety of Chalcedony, SiO₂)) — Mineral

Chrysoprase

Chrysoprase (a variety of Chalcedony, SiO₂)

Amethyst (Amethyst is a variety of Quartz (SiO₂)) — Mineral

Amethyst

Amethyst is a variety of Quartz (SiO₂)