Man Made

Browse man made specimens identified by the Rock Identifier community.

Learn about Man Made in the encyclopedia

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Opalite

Goldstone

Blue Goldstone

Zincite

Map Jasper

Mandarin Garnet

Andalusite

Marl

Dunite

Coquina

Dalmatian Jasper

Chalk

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

sedimentary

Serpentinite

Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)

Metamorphic Rock

Chert (or Flint)

Chert (a cryptocrystalline variety of quartz, SiO2)

sedimentary

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

mineral (man-enhanced)

Titanium Coated Aura Quartz (Apple Aura Quartz)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating

Mineral (Man-modified)

Marble

Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)

metamorphic

Jade (likely Nephrite Jade based on appearance)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)

Mineral

Obsidian

Obsidian (volcanic glass)

Igneous

Chert / Flint

Chert (varieties include Flint)

Sedimentary

Quartz (Pebble)

Quartz (SiO₂)

Mineral

Chert (Jasper Variant likely)

Silicon Dioxide (SiO2)

Sedimentary Rock or Mineral (depending on origin and purity)

Basalt

Igneous

Fossiliferous Limestone

Limestone (composed primarily of calcite with included fossils CaCO3)

Sedimentary

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

igneous

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

Mineral

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Organic (if resin) or Synthetic (if glass); simulating Sedimentary or Metamorphic (for natural stones)

Asphalt

Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)

Sedimentary

Clay (as a rock-forming material)

Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)

Mineral

White Jade (Nephrite)

Nephrite, Ca2(Mg,Fe)5Si8O22(OH)2

Mineral

Lapis Lazuli

Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)

Mineral, part of a rock

Smoky Quartz

Smoky Quartz (SiO2)

Mineral

Gold

Aurum (Au)

Mineral (Metal)

Rose Quartz (likely carved)

Rose Quartz (SiO2)

Mineral

Rose Quartz Carving

Quartum roseum (Variety of Quartz, SiO2)

Mineral

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Metamorphic Rock / Mineral

Chert (variant of Flint)

Chert (SiO2)

Sedimentary

Garnet Beads

Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)

Mineral

Quartz

Silicon Dioxide (SiO₂)

Mineral

Lapis Lazuli

A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).

Mineral

Amber (Copal)

Organic gemstone, fossilized tree resin (often immature amber or copal)

Mineral

Gold (Elemental Metal)

Gold (Au)

Mineral

Chert (or possibly Flint)

Chert (variant: Flint)

Sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

sedimentary

Muscovite Mica

Muscovite (Potassium Aluminum Silicate Hydroxide Fluoride), KAl2(AlSi3O10)(OH,F)2

mineral

Dog (Sleeping)

Canis familiaris (or Canis lupus familiaris)

Organic/Biological

Agate (specifically, multi-colored or pastel-dyed agate)

Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).

Mineral