Rock Identifier

Category

Man Made

Browse man made specimens identified by the Rock Identifier community.

Learn about Man Made in the encyclopedia

Opalite

Goldstone

Blue Goldstone

Zincite

Map Jasper

Mandarin Garnet

Mandarin Garnet

Andalusite

Marl

Dunite

Coquina

Dalmatian Jasper

Dalmatian Jasper

Chalk

Jade (There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.) — Mineral

Jade

There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.

Chrysotile Asbestos (Chrysotile [Mg3Si2O5(OH)4]) — mineral

Chrysotile Asbestos

Chrysotile [Mg3Si2O5(OH)4]

Granite (Granite) — Igneous

Granite

Granite

Scoria (Basaltic Lava Rock) (Vesicular Basalt) — igneous

Scoria (Basaltic Lava Rock)

Vesicular Basalt

Red Jasper (Banded Jasper) (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper (Banded Jasper)

Jasper (Silicon Dioxide, SiO2)

Xenolith in Basalt (Mafic Igneous Rock with Felsic Inclusion) — igneous

Xenolith in Basalt

Mafic Igneous Rock with Felsic Inclusion

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Unakite (Unakite (Epidotized Granite)) — metamorphic

Unakite

Unakite (Epidotized Granite)

Quartz (Smoky Quartz variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Yellow Quartzite River Stone (Quartzite (SiO2)) — metamorphic

Yellow Quartzite River Stone

Quartzite (SiO2)

Quartz (Crystal Point/Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Crystal Point/Fragment)

Silicon Dioxide (SiO2)

Rough Quartz (likely Milky or Smoky Quartz) (Silicon Dioxide (SiO2)) — mineral

Rough Quartz (likely Milky or Smoky Quartz)

Silicon Dioxide (SiO2)

Quartzite river stone (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite river stone

Quartzite (SiO2 silicon dioxide)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Slate (Slate (Regional metamorphic rock composed primarily of quartz, illite, and chlorite)) — metamorphic

Slate

Slate (Regional metamorphic rock composed primarily of quartz, illite, and chlorite)

Jasper (Iron-rich) (Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities) — sedimentary

Jasper (Iron-rich)

Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities

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

Optical Calcite

Calcite (Calcium Carbonate, CaCO3)

Scoria (Vesicular Basaltic Glass (comprised primarily of volcanic glass/silica with plagioclase, pyroxene, and olivine crystals)) — igneous

Scoria

Vesicular Basaltic Glass (comprised primarily of volcanic glass/silica with plagioclase, pyroxene, and olivine crystals)

Carbonate Beach Sand (Biogenic Carbonate Sediment (CaCO3)) — sedimentary

Carbonate Beach Sand

Biogenic Carbonate Sediment (CaCO3)

Basalt (River Stone) (Basalt) — igneous

Basalt (River Stone)

Basalt

Black Onyx (Silicon Dioxide (SiO2)) — mineral

Black Onyx

Silicon Dioxide (SiO2)

Sandstone, Quartzite, and River Pebbles (Silicon Dioxide (SiO2) based Sedimentary/Metamorphic structures) — Sedimentary and Metamorphic

Sandstone, Quartzite, and River Pebbles

Silicon Dioxide (SiO2) based Sedimentary/Metamorphic structures

Sedimentary and Metamorphic

Milky Quartz (Tumbled Pebble) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (Tumbled Pebble)

Silicon Dioxide (SiO2)

Quartz Vein on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Vein on Matrix

Silicon Dioxide (SiO2)

Limestone (Sedimentary rock composed primarily of Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary rock composed primarily of Calcium Carbonate (CaCO3)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Emerald (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — gemstone

Emerald

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Mixed Agate and Lapis Lazuli Bracelet (Chalcedony (SiO2) and Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — sedimentary and metamorphic

Mixed Agate and Lapis Lazuli Bracelet

Chalcedony (SiO2) and Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

sedimentary and metamorphic

Emerald In Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald In Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

Corundum (Ruby/Sapphire crystal) (Al2O3 (Aluminum Oxide)) — mineral

Corundum (Ruby/Sapphire crystal)

Al2O3 (Aluminum Oxide)

Optical Calcite (Calcium Carbonate (CaCO3)) — mineral

Optical Calcite

Calcium Carbonate (CaCO3)

Pink Tourmaline (Rubellite) (Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)) — mineral

Pink Tourmaline (Rubellite)

Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)

Citrine Geode (Citrine (Silicon Dioxide, SiO2)) — mineral

Citrine Geode

Citrine (Silicon Dioxide, SiO2)

Chalk (Sedimentary Pebble) (Calcium Carbonate (CaCO3) - Biogenic Limestone) — sedimentary

Chalk (Sedimentary Pebble)

Calcium Carbonate (CaCO3) - Biogenic Limestone

Moonstone (in a halo ring setting) (Orthoclase Feldspar (containing alternating layers of Albite), (KAlSi3O8)) — mineral

Moonstone (in a halo ring setting)

Orthoclase Feldspar (containing alternating layers of Albite), (KAlSi3O8)

Quartz (Milky or Druzy Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz

Quartz (Silicon Dioxide, SiO2)

Golden Calcite (Calcium Carbonate (CaCO3)) — mineral

Golden Calcite

Calcium Carbonate (CaCO3)

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

Fluorite (Rainbow Fluorite)

Calcium Fluoride (CaF2)