Chalcedony (Chert/Flint variety)
Silicon Dioxide (SiO2)
Category
Browse mineral (variety of chalcedony) specimens identified by the Rock Identifier community.
Chalcedony (Chert/Flint variety)
Silicon Dioxide (SiO2)
Chert (Chalcedony/Agate variety)
Microcrystalline Quartz (SiO2)
Chert (and Jasper/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Moss Agate
Silicon Dioxide with inclusions (SiO2)
Chalcedony
Chalcedony (SiO2)
Tumbled chalcedony (likely carnelian/opaque agate)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining
Grey Chalcedony (Tumbled Moon)
Microcrystalline Quartz (SiO2)
Tumbled carnelian/chalcedony
Carnelian, a reddish variety of microcrystalline quartz (SiO₂)
Tiger's Eye
Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)
Red jasper (tumbled river pebble)
Jasper, an opaque microcrystalline variety of quartz/chalcedony (SiO₂), colored mainly by iron oxides
Spherulitic Agate / Moss Agate
Chalcedony (SiO2) with mineral inclusions
Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
Chalcedony
Silicon dioxide (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Chalcedony
Silicon Dioxide (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Agate
Chalcedony (SiO2)
Chalcedony
Chalcedony (SiO2)
Plume Agate or Moss Agate
Silicon dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Onyx (Calcite Onyx / Mexican Onyx)
Calcium Carbonate (CaCO3)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Chert (Chalcedony/Agate variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Black Onyx
Cryptocrystalline Quartz (SiO2 with organic/iron impurities)
Chalcedony Pebble with Jasper/Iron Oxide Cortex
Silicon Dioxide (SiO2)
Blue Chalcedony
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
Polished Mexican “Crazy Lace” agate tower
Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
Blue Chalcedony
Silicon Dioxide (SiO2)
Chalcedony (Botryoidal or Chalcedony Rose)
Silicon dioxide (SiO2)
Blue Chalcedony
Chalcedony (SiO2)
Chalcedony (Botryoidal/Chalcedony Rose)
Silicon Dioxide (SiO2)
Flint / Chert (or fossiliferous nodule)
Microcrystalline quartz (SiO2)
Flint / Chert
Microcrystalline Quartz (SiO2)
Green Kyanite
Kyanite (Al2SiO5)
Chalcedony
SiO2 (Silicon Dioxide)
Chalcedony
Silicon Dioxide (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)