Carnelian Bead
Silicon Dioxide (Chalcedony variety), SiO2
Category
Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.
Carnelian Bead
Silicon Dioxide (Chalcedony variety), SiO2
Jasper with Quartz
Silicon Dioxide (SiO2) - Chalcedony variety
Agate (specifically Chalcedony/Banded Agate)
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with Iron Oxide impurities
Shale (possibly)
Shale (fine-grained clastic sedimentary rock)
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
Lake Superior Agate
Banded Chalcedony (Silicon Dioxide, SiO2)
Banded Chalcedony (Agate)
Silicon Dioxide (SiO2)
Honey-colored chalcedony (likely carnelian)
Microcrystalline quartz, SiO₂; orange chalcedony colored by iron oxides
Dyed Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Yellow Jasper
Chalcedony (SiO2 with iron oxide inclusions)
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) with Iron impurities
Jasper (likely Polychrome or Mookaite variants)
Silicon Dioxide (SiO2) with iron oxide and hydroxide inclusions
Jasper
Jasper (Silicate - SiO2)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
Chalcedony (Chert/Flint)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Banded Calcite (often sold as Onyx or Mexican Onyx)
Calcite (CaCO3)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide impurities
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper with Quartz Veining
Silicon Dioxide (SiO2) with Hematite impurities
Yellow Jasper (with Iron staining)
Silicon Dioxide (SiO2)
Red Jasper
Quartz (SiO2) with Iron Oxide impurities
Red Jasper
Jasper (Silica with Hematite inclusions), SiO2
Red Jasper
Silicon dioxide (SiO2) with iron oxide (Hematite) inclusions
Picture Jasper
Silicon Dioxide (SiO2) with impurities
Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with impurities
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) with impurities
Jasper
Jasper (Silicon Dioxide, SiO2)
Jasper with Quartz Vein
Silicon Dioxide (SiO2) with impurities
Brown Jasper / Chert Pebbles
Microcrystalline Quartz (SiO2) with iron oxide impurities
Red Jasper (Ocherous Chert)
Silicon Dioxide (SiO2) with Hematite impurities
Yellow Jasper
Silicon Dioxide with Goethite (SiO2 + FeO(OH))
Yellow Jasper (Iron-stained Chert)
Silicon Dioxide (SiO2) with iron oxide (Limonite/Goethite) inclusions
Jasper
Silicon dioxide (SiO2) with iron oxide impurities
Jasper
Jasper (Silica/Silicon Dioxide, SiO2)
Jasper (Cream/Yellow variety)
Silicon dioxide (SiO2)
Jasper (specifically a banded or dark variety)
Silicon Dioxide (SiO2) with impurities