Rock Identifier

Category

Anthropogenic (Man Made Artifact)

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

Learn about Anthropogenic (Man Made Artifact) in the encyclopedia

Opalite

Map Jasper

Goldstone

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Zincite

Marl

Coquina

Dunite

Dalmatian Jasper

Dalmatian Jasper

Rock Gypsum

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

Diamond (in a jewelry setting)

Carbon (C)

Yellow chalcedony (likely agate) cabochons (Microcrystalline quartz, SiO₂; chalcedony variety, possibly naturally colored or dyed) — gemstone

Yellow chalcedony (likely agate) cabochons

Microcrystalline quartz, SiO₂; chalcedony variety, possibly naturally colored or dyed

Jade Bangle (Jadeite) (Jadeite, NaAlSi2O6) — gemstone

Jade Bangle (Jadeite)

Jadeite, NaAlSi2O6

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

Blue Chalcedony Cube

Silicon Dioxide (SiO2)

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Fossil Shark Tooth (Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna) — fossil

Fossil Shark Tooth

Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna

Gabbro (Gabbro) — igneous

Gabbro

Gabbro

Corundum (Ruby variety) (Aluminium oxide (Al2O3)) — mineral

Corundum (Ruby variety)

Aluminium oxide (Al2O3)

Diamond (as set in a gold ring) (Carbon (C)) — mineral

Diamond (as set in a gold ring)

Carbon (C)

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

Turquoise

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

Carnelian or Red Agate (Chalcedony (SiO2)) — mineral

Carnelian or Red Agate

Chalcedony (SiO2)

Chert or flint fragment (Microcrystalline quartz (SiO₂), likely chert) — sedimentary

Chert or flint fragment

Microcrystalline quartz (SiO₂), likely chert

Lapis Lazuli (Lapis Lazuli (contains lazurite, calcite, pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (contains lazurite, calcite, pyrite)

Chert (likely flint) (Microcrystalline quartz, SiO₂) — sedimentary

Chert (likely flint)

Microcrystalline quartz, SiO₂

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

Chert / Flint

Microcrystalline quartz (SiO2)

Iron-rich vesicular rock, possibly slag or weathered basalt (Identification uncertain; likely ferruginous basalt/ironstone, with possible anthropogenic iron slag) — igneous

Iron-rich vesicular rock, possibly slag or weathered basalt

Identification uncertain; likely ferruginous basalt/ironstone, with possible anthropogenic iron slag

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Rough Diamond (Native Carbon (C)) — mineral

Rough Diamond

Native Carbon (C)

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

Diamond (in a cluster setting)

Crystallized Carbon (C)

Banded chert or silicified sedimentary stone (Microcrystalline quartz (chalcedony), SiO₂, possibly with iron-oxide and clay impurities) — sedimentary

Banded chert or silicified sedimentary stone

Microcrystalline quartz (chalcedony), SiO₂, possibly with iron-oxide and clay impurities

Chert flake or weathered flint (Microcrystalline quartz (SiO₂), commonly termed chert or flint) — sedimentary

Chert flake or weathered flint

Microcrystalline quartz (SiO₂), commonly termed chert or flint

Jadeite (NaAl(Si2O6)) — gemstone

Jadeite

NaAl(Si2O6)

Green Jadeite (Jadeite, NaAl(Si2O6)) — mineral

Green Jadeite

Jadeite, NaAl(Si2O6)

Tiger Shark Fossil Tooth (Galeocerdo cuvier (fossilized)) — sedimentary

Tiger Shark Fossil Tooth

Galeocerdo cuvier (fossilized)

Likely flint (chert) fragment (Chert, microcrystalline quartz (SiO₂)) — sedimentary

Likely flint (chert) fragment

Chert, microcrystalline quartz (SiO₂)

Corundum (Sapphire/Ruby in Matrix) (Corundum (Al2O3)) — mineral

Corundum (Sapphire/Ruby in Matrix)

Corundum (Al2O3)

Diamond Druzy (Crystalline Diamond) (Carbon (C)) — mineral

Diamond Druzy (Crystalline Diamond)

Carbon (C)

Diamond (Diamond (pure native carbon, C)) — mineral

Diamond

Diamond (pure native carbon, C)

Black Obsidian (Obsidian (Volcanic Glass, SiO2 + impurities)) — igneous

Black Obsidian

Obsidian (Volcanic Glass, SiO2 + impurities)

Gold ring with a dark, possibly gemstone setting (Gold alloy; the dark setting is not identifiable from the image) — gemstone

Gold ring with a dark, possibly gemstone setting

Gold alloy; the dark setting is not identifiable from the image

Faience and Carnelian in Egyptian Revival Jewelry (Faience (quartz frit) and Carnelian (chalcedony, SiO2)) — gemstone

Faience and Carnelian in Egyptian Revival Jewelry

Faience (quartz frit) and Carnelian (chalcedony, SiO2)

Iron-stained quartz-rich metamorphic rock (probable quartzite or hydrothermal vein rock) (Quartz-dominant rock; chiefly SiO₂, with iron oxides/hydroxides and minor sulfide minerals) — metamorphic

Iron-stained quartz-rich metamorphic rock (probable quartzite or hydrothermal vein rock)

Quartz-dominant rock; chiefly SiO₂, with iron oxides/hydroxides and minor sulfide minerals

Green sea glass or green glass-like tumbled material (Amorphous silicate glass; likely anthropogenic soda-lime glass, not a natural mineral) — mineral

Green sea glass or green glass-like tumbled material

Amorphous silicate glass; likely anthropogenic soda-lime glass, not a natural mineral

Coquina (Bioclastic Limestone) — sedimentary

Coquina

Bioclastic Limestone

Coquina (Bioclastic Limestone) — sedimentary

Coquina

Bioclastic Limestone

Grey Chalcedony (Silicon Dioxide (SiO2)) — mineral

Grey Chalcedony

Silicon Dioxide (SiO2)

Diamond (as featured in jewelry) (Diamond (C - pure carbon)) — mineral

Diamond (as featured in jewelry)

Diamond (C - pure carbon)

Polished jasper pebble (Jasper, an opaque microcrystalline variety of quartz (SiO₂), with possible iron-oxide and other mineral inclusions) — mineral

Polished jasper pebble

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with possible iron-oxide and other mineral inclusions

Possible ironstone concretion or weathered mineral nodule (Iron-oxide-rich concretion, likely goethite/limonite; identification uncertain from the photo) — sedimentary

Possible ironstone concretion or weathered mineral nodule

Iron-oxide-rich concretion, likely goethite/limonite; identification uncertain from the photo

Turquoise (likely stabilized or simulated Howlite) (CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)) — mineral

Turquoise (likely stabilized or simulated Howlite)

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

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

Chert (Flint/Jasper variety)

Microcrystalline Quartz (SiO2)

Flint (Silicon Dioxide (SiO2)) — sedimentary

Flint

Silicon Dioxide (SiO2)