Rock Identifier

Category

Not A Natural Rock

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

Amber (Succinite (fossilized tree resin)) — mineraloid / sedimentary organic material

Amber

Succinite (fossilized tree resin)

mineraloid / sedimentary organic material

Amber (Amber (Amorphous Organic Hydrocarbon)) — mineral

Amber

Amber (Amorphous Organic Hydrocarbon)

Amber (Succinite (specifically for Baltic Amber), Formula: C10H16O) — Mineraloid

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Biotite Schist (Biotite Schist) — Metamorphic

Biotite Schist

Biotite Schist

Quartz (Quartz (SiO2 - Silicon Dioxide)) — Mineral, often found as detrital grains in sedimentary rocks

Quartz

Quartz (SiO2 - Silicon Dioxide)

Mineral, often found as detrital grains in sedimentary rocks

Chert (Chert / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Synthetic Blue Aura Quartz (Silicon Dioxide (SiO2) with Metallic Infusion) — mineral (synthetic/man-made coating)

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

mineral (synthetic/man-made coating)

Lapis Lazuli (Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)

Basalt with Calcite Veins (Basalt (containing CaCO3 inclusions)) — igneous

Basalt with Calcite Veins

Basalt (containing CaCO3 inclusions)

Pearl (Organic Mineral (CaCO3 with conchiolin)) — mineral

Pearl

Organic Mineral (CaCO3 with conchiolin)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Turquoise (likely Stabilized or Dyed Howlite/Magnesite) (Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise (likely Stabilized or Dyed Howlite/Magnesite)

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

Yellow Quartz (Citrine or Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Pearl (Aragonite and Calcite (CaCO3) with Conchiolin) — mineral

Pearl

Aragonite and Calcite (CaCO3) with Conchiolin

Strawberry Quartz (Hematoid Quartz) (Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)) — mineral

Strawberry Quartz (Hematoid Quartz)

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Pearl (Organic gemstone (Calcium carbonate / CaCO3 + Conchiolin)) — mineral

Pearl

Organic gemstone (Calcium carbonate / CaCO3 + Conchiolin)

Native Copper (in coinage alloy) (Copper (Cu)) — mineral

Native Copper (in coinage alloy)

Copper (Cu)

Septarian Nodule (Yellow Jasper variety) (Septarian Nodule (comprising Calcite, Aragonite, and Limestone/Bentonite)) — sedimentary

Septarian Nodule (Yellow Jasper variety)

Septarian Nodule (comprising Calcite, Aragonite, and Limestone/Bentonite)

Gold Flake (Native Gold (Au)) — mineral

Gold Flake

Native Gold (Au)

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

Howlite

Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)

Satin Spar (Selenite) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Amethyst (Amethyst (Silicon Dioxide, SiO2 with Iron impurities)) — mineral

Amethyst

Amethyst (Silicon Dioxide, SiO2 with Iron impurities)

Ruby (Corundum (Al2O3 with Chromium)) — mineral

Ruby

Corundum (Al2O3 with Chromium)

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

Hematite

Iron(III) oxide (Fe2O3)

Carnelian Agate (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Bauxite (Hydrated Aluminum Oxides (primarily Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))) — sedimentary

Bauxite

Hydrated Aluminum Oxides (primarily Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))

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

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Peacock Ore (Chalcopyrite/Bornite) (Bornite (Cu5FeS4) or iridescent treated Chalcopyrite (CuFeS2)) — Mineral

Peacock Ore (Chalcopyrite/Bornite)

Bornite (Cu5FeS4) or iridescent treated Chalcopyrite (CuFeS2)

Pyrite in Shale (Iron Disulfide (FeS2) in Sedimentary Shale) — mineral

Pyrite in Shale

Iron Disulfide (FeS2) in Sedimentary Shale

Porphyritic Basalt (Porphyritic Basalt (with Plagioclase phenocrysts)) — igneous

Porphyritic Basalt

Porphyritic Basalt (with Plagioclase phenocrysts)

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

Fluorite

Fluorite (Calcium Fluoride - CaF2)

Porphyritic Basalt (with Pyrolusite or Iron-oxide staining) (Porphyritic Basalt (Mafic Extrusive)) — igneous

Porphyritic Basalt (with Pyrolusite or Iron-oxide staining)

Porphyritic Basalt (Mafic Extrusive)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Amethyst Geode (Amethyst (Silicon Dioxide), Formula: SiO2) — mineral

Amethyst Geode

Amethyst (Silicon Dioxide), Formula: SiO2

Druzy Quartz on Host Rock (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Host Rock

Silicon Dioxide (SiO2)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

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

Green Fluorite

Fluorite (Calcium Fluoride) - CaF2

Fluorite (Purple Octahedron) (Calcium Fluoride (CaF2)) — Mineral

Fluorite (Purple Octahedron)

Calcium Fluoride (CaF2)

Banded Rock (likely Quartz-rich) (Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals) — Mineral

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals