Rock Identifier

Category

Anthropogenic (Man Made)

Browse anthropogenic (man made) specimens identified by the Rock Identifier community.

Learn about Anthropogenic (Man Made) in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Lherzolite

Gondite

Dunite

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Sandstone (Arenite (variable SiO2 composition)) — sedimentary

Sandstone

Arenite (variable SiO2 composition)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Goldstone (aventurine glass) (Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone) — gemstone

Goldstone (aventurine glass)

Synthetic copper-bearing soda-lime glass; commonly sold as red goldstone

Pearl (Aragonite (CaCO3 with conchiolin)) — mineral

Pearl

Aragonite (CaCO3 with conchiolin)

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

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

Chalk (Calcium Carbonate (CaCO3)) — sedimentary

Chalk

Calcium Carbonate (CaCO3)

Diamond (faceted) (Diamond (Pure Carbon, C)) — mineral

Diamond (faceted)

Diamond (Pure Carbon, C)

Quartzite (Metamorphic quartz rock (SiO2)) — metamorphic

Quartzite

Metamorphic quartz rock (SiO2)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

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

Diamond (in a jewelry setting)

Cubic Carbon (C)

Likely weathered sandstone fragment (Sandstone, composed mainly of quartz (SiO₂) and feldspar grains in a clay, silica, or iron-oxide cement) — sedimentary

Likely weathered sandstone fragment

Sandstone, composed mainly of quartz (SiO₂) and feldspar grains in a clay, silica, or iron-oxide cement

Nacre (Mother of Pearl) (Nacre (Biogenic Aragonite/Calcite composite, CaCO3)) — mineral

Nacre (Mother of Pearl)

Nacre (Biogenic Aragonite/Calcite composite, CaCO3)

Fossiliferous Limestone (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Sandstone (likely Fossiliferous) (Arenite / Fossiliferous Sandstone (SiO2 composition)) — sedimentary

Sandstone (likely Fossiliferous)

Arenite / Fossiliferous Sandstone (SiO2 composition)

Tumbled epidote-bearing rock (likely epidote–quartz–feldspar aggregate) (Epidote-rich metamorphic rock; minerals likely epidote (Ca₂(Al,Fe)₃Si₃O₁₂(OH), quartz, feldspar, and dark amphibole/biotite)) — metamorphic

Tumbled epidote-bearing rock (likely epidote–quartz–feldspar aggregate)

Epidote-rich metamorphic rock; minerals likely epidote (Ca₂(Al,Fe)₃Si₃O₁₂(OH), quartz, feldspar, and dark amphibole/biotite)

Quartzite (Metamorphic Quartz Arenite) — metamorphic

Quartzite

Metamorphic Quartz Arenite

Tumbled green glassy mineral, possibly aventurine or fluorite (Uncertain; likely quartz variety (aventurine quartz, SiO₂) or green fluorite (CaF₂)) — mineral

Tumbled green glassy mineral, possibly aventurine or fluorite

Uncertain; likely quartz variety (aventurine quartz, SiO₂) or green fluorite (CaF₂)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Pearl (Calcium Carbonate (CaCO3) with Conchiolin) — mineral

Pearl

Calcium Carbonate (CaCO3) with Conchiolin

Coquina (Bioclastic Limestone (composed primarily of CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Sandstone (Arenite (specifically sublithic or quartz arenite)) — sedimentary

Sandstone

Arenite (specifically sublithic or quartz arenite)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Diamond (Cluster Ring) (Carbon (C)) — mineral

Diamond (Cluster Ring)

Carbon (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Concrete or asphalt-like aggregate surface with a dark fragment (Uncertain; likely artificial concrete containing mixed lithic aggregate, not a natural rock) — sedimentary

Concrete or asphalt-like aggregate surface with a dark fragment

Uncertain; likely artificial concrete containing mixed lithic aggregate, not a natural rock

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

Chert (Chert / Flint)

Microcrystalline Quartz (SiO2)

Diamond in Kimberlite (Diamond (C in Kimberlite Matrix)) — igneous

Diamond in Kimberlite

Diamond (C in Kimberlite Matrix)

Pearl (Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)) — mineral

Pearl

Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)

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

Rough Diamond

Diamond (pure Carbon, C)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

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

Diamond

Diamond (Pure Carbon, C)

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation) (Quartz, silicon dioxide (SiO₂)) — mineral

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Sandstone (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite)

Quartzite (Quartzite (Metamorphic Quartz Sandstone)) — metamorphic

Quartzite

Quartzite (Metamorphic Quartz Sandstone)

Likely blue glass or synthetic gemstone jewelry (Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass) — gemstone

Likely blue glass or synthetic gemstone jewelry

Uncertain; possibly synthetic spinel, cubic zirconia, or blue glass

Rough Diamond (Pure Carbon (C)) — mineral

Rough Diamond

Pure Carbon (C)