Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Category
Sedimentary (Silicified Fossiliferous Chalcedony)
Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.
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Red Jasper (Silicate Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jasper (River pebble)
Jasper / Silicon Dioxide (SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2) with iron impurities
sedimentary
Green Jasper with Quartz veins
Jasper (Silicon Dioxide, SiO2)
sedimentary
Banded Calcite (often sold as Yellow Aragonite or Onyx)
Calcium Carbonate (CaCO3)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite or Iron Oxide inclusions
sedimentary
Chert (often called Flint)
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Jasper (Iron-rich)
Silicon Dioxide (SiO2) with Fe2O3 (Hematite) inclusions
sedimentary
Jasper
Silicon dioxide (SiO2) with iron oxide impurities
sedimentary
Red Jasper (River Polished Quartzite)
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) impurities
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Limonite inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Fancy Jasper
Chalcedony (cryptocrystalline quartz) with inclusions
Mineral
Chalcedony Nodule (Commonly known as Agate or Chert)
Microcrystalline Quartz (SiO2)
mineral
Carnelian
Silicon Dioxide (Chalcedony variety), SiO2
gemstone
Carnelian
SiO2 (Silicon Dioxide, variety of Chalcedony)
mineral
Banded Agate (Dyed Purple)
Agate (Variety of Chalcedony/Quartz), SiO2
mineral
Chert (Chalcedony/Agate Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Mineral
Tumbled jasper pebble
Silica-rich microcrystalline quartz/chalcedony, commonly brecciated or iron-stained jasper (SiO₂)
metamorphic
Banded Agate (Jasper-Agate)
Silicon Dioxide (SiO₂)
Mineral
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Chert (flint-like chalcedony)
Microcrystalline quartz, SiO₂
sedimentary
Chert (Flint / Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
River Pebble (Chalcedony / Quartzite)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper/Chalcedony pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Chalcedony/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony (Pink/Gray variety)
Silicon Dioxide (SiO2)
mineral
Jasper (likely Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary (chemically precipitated mineral)
Chalcedony (specifically Agate or Flint)
Silicon Dioxide (SiO₂)
Mineral
Tumbled chalcedony (likely carnelian/opaque agate)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining
mineral
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Chalcedony (Common Opal or Agate variant)
Silicon Dioxide (SiO₂)
mineral
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Agate (specifically, a slice of a Blue Lace or Chalcedony Agate nodule)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Dyed Agate
Silicon Dioxide (Chalcedony with artificial colorant), SiO2
gemstone
Banded Chalcedony (Agate) in Basalt Matrix
Cryptocrystalline Quartz (SiO2) in Mafic Igneous Rock
sedimentary/igneous