Dyed Blue Agate Slice
Chalcedony (Silicon Dioxide, SiO2)
Category
Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.
Dyed Blue Agate Slice
Chalcedony (Silicon Dioxide, SiO2)
Carnelian
Carnelian (Chert/Chalcedony) - SiO2
Banded Agate
Agate (Silicon Dioxide, SiO2)
Red Jasper (with Chert/Quartz)
Silicon Dioxide (SiO2)
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
Yellow Jasper
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
Red Jasper (possibly with Quartz or Hematite)
Silicon Dioxide (SiO2) with iron oxide impurities
Quartz Geode Fragment
Silicon dioxide (SiO2) within a nodule
Chert (Jasper)
Cryptocrystalline Silicon Dioxide (SiO2)
Tumbled red jasper
Jasper, microcrystalline quartz (SiO₂), commonly colored by iron oxides
Chert with Jasper and Quartz
Microcrystalline Quartz (SiO2)
Chalcedony (River Stone)
Microcrystalline Quartz (SiO2)
Chalcedony (Agate / Quartz Geode Fragment)
Silicon Dioxide (SiO2)
Flower Agate (Plume Agate)
Chalcedony (Silicon Dioxide) with Spherulitic Inclusions - SiO2
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2
Red Jasper
Jasper (Silicon Dioxide) - SiO2
Flint (chert), likely brown flint
Microcrystalline quartz/chalcedony (SiO₂)
Banded chert (likely flint)
Microcrystalline quartz/chalcedony, SiO₂
Worked chert (likely flint)
Microcrystalline quartz/chalcedony, SiO₂
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Flint Pebble
SiO2 (Microcrystalline Quartz / Chalcedony)
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Jasper Pebble
Microcrystalline Quartz (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Green Jasper
Microcrystalline Quartz (Chalcedony), SiO2
Agate
Silicon Dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Red Jasper
Microcrystalline Quartz (Chalcedony), SiO2
Red Jasper
Microcrystalline Quartz (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2
Agate
Silicon dioxide (Chalcedony), SiO2