Banded Onyx (Mexican Onyx / Travertine)
Calcite (CaCO3) - Banded Travertine
sedimentary
Category
Mineral_variety_of_chalcedony
Browse mineral_variety_of_chalcedony specimens identified by the Rock Identifier community.
Agate (specifically a small Chalcedony nodule)
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Carnelian
Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO₂)
Mineral
Carnelian
Carnelian (variety of Chalcedony, SiO2 with iron oxide impurities)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Jasper (Iron-stained)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jasper
Jasper (Silicate mineral, SiO2)
sedimentary
Jasper (likely Ocean Jasper or Variegated Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
sedimentary
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with iron oxide and other mineral impurities
sedimentary (chemical/biological origin)
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Blue Chalcedony Geode (with Quartz Druzy)
Silicon Dioxide (SiO2) - Microcrystalline variety of Quartz
mineral
Jasper with Iron Staining
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or iron oxide inclusions
sedimentary
Banded Agate (specifically Sardonyx or Black Agate variety)
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
mineral
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jasper (Iron-stained Chalcedony)
SiO2 with Fe2O3 (Iron Oxide) impurities
Sedimentary / Mineral (Silica)
Jasper
Chalcedony (cryptocrystalline quartz), SiO2
Sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Jasper River Stone
Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)
sedimentary
Jasper Beach Pebble
Silicon Dioxide (SiO2) - Macro-crystalline Quartz
sedimentary
Jasper (specifically Picture Jasper or Landscape Jasper)
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
sedimentary
Quartz Pebble (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Mineral
Druzy Agate (specifically Black Druzy Agate)
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
mineral
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Crazy Lace Agate
Agate (Cryptocrystalline Quartz), Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Red Jasper (with Quartz inclusions)
Silicon Dioxide (SiO2)
sedimentary (physico-chemical)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities
sedimentary
Red Jasper
Silicon dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Riverstone Jasper (Chert variant)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Chert/Chalcedony Variety)
Silicon Dioxide (SiO2)
mineral
Jasper with Agate Inclusions
Silicon Dioxide (SiO2) - variety of Quartz/Chert
sedimentary
Blue Lace Agate
Chalcedony (a form of Quartz) - SiO2
Mineral
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Chert (Agatized Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint)
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary