Rock Identifier

Category

Not A Natural Rock (Man Made Composite)

Browse not a natural rock (man made composite) specimens identified by the Rock Identifier community.

Pink Granite (Phaneritic Plutonic Igneous Rock (high K-feldspar content)) — igneous

Pink Granite

Phaneritic Plutonic Igneous Rock (high K-feldspar content)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Dendritic Agate (Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)) — mineral

Dendritic Agate

Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)

Quartzite (Lithic Artifact) (Quartzite (SiO2)) — metamorphic

Quartzite (Lithic Artifact)

Quartzite (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 (Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)) — igneous

Granite

Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)

Pearl (in a decorative hair comb setting) (Calcium carbonate (CaCO3) primarily as Aragonite, bonded with Conchiolin) — Organic Mineraloid

Pearl (in a decorative hair comb setting)

Calcium carbonate (CaCO3) primarily as Aragonite, bonded with Conchiolin

Organic Mineraloid

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

Rough Diamond

Diamond (pure Carbon, C)

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Quartzite (River Cobble) (Metamorphic Rock (composed predominantly of SiO2)) — metamorphic

Quartzite (River Cobble)

Metamorphic Rock (composed predominantly of SiO2)

Oolitic Limestone (Oolite (Sedimentary rock composed of CaCO3)) — sedimentary

Oolitic Limestone

Oolite (Sedimentary rock composed of CaCO3)

Rhodonite (Rhodonite (MnSiO3)) — Mineral

Rhodonite

Rhodonite (MnSiO3)

Granite (Granite (Phaneritic Quartz-Feldspar Igneous Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Igneous Rock)

Amber (Fossilized Tree Resin (Succinate)) — mineral

Amber

Fossilized Tree Resin (Succinate)

Coquina (Biogenic Limestone (Coquina)) — sedimentary

Coquina

Biogenic Limestone (Coquina)

Rough Diamond (Native Carbon (C)) — mineral

Rough Diamond

Native Carbon (C)

Rough Diamond (Diamond (pure carbon / C)) — mineral

Rough Diamond

Diamond (pure carbon / C)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Rose Quartz Carving (Quartum roseum (Variety of Quartz, SiO2)) — Mineral

Rose Quartz Carving

Quartum roseum (Variety of Quartz, SiO2)

Granite (Granite) — Igneous

Granite

Granite

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Granodiorite (Gneissic texture) (Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)) — igneous

Granodiorite (Gneissic texture)

Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)

Basalt (Vesicular) (Basalt (Extrusive Volcanic Rock)) — igneous

Basalt (Vesicular)

Basalt (Extrusive Volcanic Rock)

Basalt with inclusion (Basalt (Aphanitic-Porphyritic texture)) — igneous

Basalt with inclusion

Basalt (Aphanitic-Porphyritic texture)

Basalt with Scoria (Amygdaloidal Basalt / Vesicular Basalt) — igneous

Basalt with Scoria

Amygdaloidal Basalt / Vesicular Basalt

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

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Howlite (Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)) — mineral

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

Optical Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Optical Calcite

Calcite (Calcium Carbonate, CaCO3)

Diamond (Princess Cut Faceted Gemstone) (Native Carbon (C)) — mineral

Diamond (Princess Cut Faceted Gemstone)

Native Carbon (C)

Moonstone (Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions) — mineral

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

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

Hematite

Iron(III) oxide (Fe2O3)

Red Ochre (Hematite-rich Clay) (Limonitic/Hematitic Claystone (Fe2O3 with clay minerals)) — Sedimentary

Red Ochre (Hematite-rich Clay)

Limonitic/Hematitic Claystone (Fe2O3 with clay minerals)

Pyrulite (Pyrite / Chalcopyrite) (Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)) — mineral

Pyrulite (Pyrite / Chalcopyrite)

Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Rose Quartz (Rose Quartz (SiO2)) — Mineral

Rose Quartz

Rose Quartz (SiO2)

Quartzite (Yellow/Tan) (Metamorphic Rock composed of Quartz (SiO₂)) — metamorphic

Quartzite (Yellow/Tan)

Metamorphic Rock composed of Quartz (SiO₂)

Goldfish Cracker (Culinary Mimic) (Cibus aurum (Commonly composed of Enriched Wheat Flour and Cheddar Cheese)) — Anthropogenic Sedimentary-style Organic Solid

Goldfish Cracker (Culinary Mimic)

Cibus aurum (Commonly composed of Enriched Wheat Flour and Cheddar Cheese)

Anthropogenic Sedimentary-style Organic Solid

Dream Amethyst (Chevron Amethyst) (Silicon Dioxide with inclusions (SiO2)) — mineral

Dream Amethyst (Chevron Amethyst)

Silicon Dioxide with inclusions (SiO2)

Chert Nodule (with Flint core) (Sedimentary Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert Nodule (with Flint core)

Sedimentary Cryptocrystalline Quartz (SiO2)

Obsidian (Volcanic Glass (SiO2 - Silicon Dioxide with impurities)) — igneous

Obsidian

Volcanic Glass (SiO2 - Silicon Dioxide with impurities)