Petrified Wood
Silicified Wood (SiO2)
sedimentary
Category
Synthetic (Man Made Material Mimicking Natural Stone)
Browse synthetic (man made material mimicking natural stone) specimens identified by the Rock Identifier community.
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Magnetic Hematite
Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)
Mineral
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
man-made glass mineral simulant
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
Chert (Polished River Pebble)
Chert (SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite / Lithic sandstone)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Granite
Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)
igneous
Coquina
Biogenic Limestone (Coquina)
sedimentary
Granite
Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)
Igneous
Chert Nodule (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Red Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Antropogenic (Man-made material)
Chert / River Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Dyed Quartz (imitating Emerald/Green Quartz)
Silicon Dioxide (SiO2) with artificial pigment
mineral
Tumbled blue-dyed stone, likely basalt or blue aventurine
Likely fine-grained basalt (plagioclase and pyroxene), possibly coated or dyed; exact identification requires testing
igneous
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Sandstone
Sandstone (composed predominantly of Quartz, SiO2, with Feldspar and Clay minerals)
sedimentary
Ruby in Zoisite (Anyolite) or possibly a dyed stone/agate
Anyolite (Ruby in green zoisite) or artificially altered chalcedony
metamorphic
Grey Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (with iron staining)
Quartz Arenite / Ferruginous Sandstone
sedimentary
Granite Pebble
Granite; primarily composed of Quartz (SiO2), Feldspar (KAlSi3O8), and Mica
igneous
Dragon Vein Agate
Silicon dioxide / Chalcedony (with heat/dye treatment) SiO2
gemstone
Banded Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Flint)
Chert (SiO2)
sedimentary
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
not a rock (synthetic material)
Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
man-made rock (technosol)
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 cement)
sedimentary
Dyed Blue Agate Slice
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Sandstone
Sandstone (Quartz-rich sedimentary rock)
sedimentary
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Chert / Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Chert (Cherty Shale / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartzite (with Mica / Quartzite Schist)
SiO2 (Silica) with minor Muscovite Mica KAl2(AlSi3O10)(OH)2
metamorphic
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary