Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Category
Man Made Rock Like Material
Browse man made rock like material specimens identified by the Rock Identifier community.
Learn about Man Made Rock Like Material in the encyclopedia
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Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Onyx (Black) and Mother of Pearl Inlay
Silicon Dioxide (SiO2) for Onyx; Aragonite (CaCO3) for Mother of Pearl
mineral
Tiger Shark Fossil Tooth
Galeocerdo cuvier (fossilized)
sedimentary
Carved quartz (likely rose quartz and green aventurine/quartz)
Quartz, silicon dioxide (SiO₂); green material may be aventurine quartz or serpentine
gemstone
Diamond
Carbon (C)
mineral
Sandstone
Arenite (SiO2 with various cementing agents)
sedimentary
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
metamorphic
Yellow Sapphire (Raw)
Corundum (Al2O3)
mineral
Red Sandstone
Arenite (SiO2 with Fe2O3)
sedimentary
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Anthropogenic (Man-made)
Pink Marble
Recrystallized Limestone (Calcium Carbonate, CaCO3)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Diamond (in jewelry setting)
Diamond (C - Carbon)
mineral
Rough Diamond
Pure Carbon (C)
mineral
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Diorite
Phaneritic Intrusive Igneous Rock (composed of Plagioclase feldspar, Hornblende, and Biotite)
igneous
Diamond ring
Diamond, crystalline carbon (C)
gemstone
Sandstone
Arenite
sedimentary
Blue Sea Glass
Amorphous Silica (Anthropogenic glass)
not a rock (man-made origin)
Chert
Microcrystalline quartz (SiO2)
sedimentary
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Note: Item is a Synthetic/Man-made Object
Titanium-coated Stainless Steel (Fe-Cr-Ni-Ti)
Non-geological
Chalk
Calcite (CaCO3)
sedimentary
Quartz Vein in Siltstone
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
metamorphic
Hoodoo (Limestone / Siltstone Formation)
Claron Formation (Sedimentary Rock - Limestone, Mudstone, Dolomite)
sedimentary
Granite
Granite (a phaneritic intrusive igneous rock)
igneous
Sandstone
Arenite (typically SiO2 based)
sedimentary
Chert (Flinty variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Fossilized Bone Fragment
Vertebrate Fossil
fossil
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Yellow Jade (Quartzite Jade)
Quartzite (SiO2)
gemstone
Diamond (as set in a gold ring)
Carbon (C)
mineral
Diamond (in a jewelry setting)
Diamond (Carbon, C)
mineral
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Metal Alloy (Jewelry)
Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.
Man-made Material (jewelry, metal alloy)
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Zebra Chert/Flint)
Silicon Dioxide (SiO2)
sedimentary
Dolerite (Diabase)
Dolerite / Diabase
igneous