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Recent Rock Identifications
Explore rocks, minerals, and gemstones recently identified by our AI-powered system
Green Slate (Greenstone)
Metamorphic shale (varied composition)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Apricot Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Yellow Quartz (Citrine or Yellow Chalcedony)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Sandstone (Quartzite Pebble)
Arenite (SiO2)
sedimentary
Basalt River Pebble
Basalt
igneous
Jasper
Silicon dioxide (SiO2)
sedimentary
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Jasper
Silicon dioxide (SiO2)
sedimentary
Moss Agate
Cryptocrystalline Quartz (SiO2 with Manganese or Iron Oxide inclusions)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Milky Quartz
Silicon dioxide (SiO2)
mineral
Banded Chert (River Stone)
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Jasper (Silicon Dioxide) - SiO2
mineral
Granite
Granite
igneous
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Agate (specifically Lake Superior Agate style or Banded Chalcedony)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Lapis Lazuli
Lazurite-dominant Metamorphic Rock (complex aluminosilicate)
metamorphic
Diamond (in jewelry)
Diamond (Carbon, C)
mineral
Petrified Wood
Silicified wood (primarily SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz, Chalcedony, or Opal)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Calamites (Fossil)
Calamites sp. (Tracheophyta, Equisetopsida)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Shale (Ferruginous)
Laminated Mudrock (Siliciclastic Sedimentary Rock)
sedimentary
Petrified Wood (Jet or Coalified Wood appearance)
Silicified wood (principally SiO2) or Carbonized Wood
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Shale
Fissile mudstone (rich in clay minerals and quartz)
sedimentary
Shale
Shale (Sedimentary rock composed of mud/clay minerals)
sedimentary
Petrified Wood
Silicified Wood (SiO2 as Quartz/Chert/Chalcedony)
sedimentary
Red Sandstone
Arenite
sedimentary
Chert (often called Flint in this context)
Silicon Dioxide (SiO2)
sedimentary
Basalt
Extrusive mafic igneous rock
igneous
Graywacke
Graywacke (immature sandstone)
sedimentary
Sandstone
Arenite
sedimentary
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