Banded Agate
Chalcedony (SiO2) with impurities
mineral
Category
Mineral (Variety Of Chalcedony)
Browse mineral (variety of chalcedony) specimens identified by the Rock Identifier community.
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Jasper Beads (Polished)
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Jasper (Silica with Iron Oxide inclusions), SiO2
sedimentary
Polished River Jasper
Silicon Dioxide (SiO2) with iron and other mineral inclusions
sedimentary
Blue Chalcedony Cube
Silicon Dioxide (SiO2)
mineral
Quartz (Chalcedony/Agate nodule)
Silicon dioxide (SiO2)
mineral
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and other mineral inclusions
mineral
Banded Agate (specifically Sardonyx Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Flower Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Agate (Geode nodule fragment)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Ocean Jasper
SiO2 (Silicon Dioxide) - Chalcedony variety
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions
mineral
Black Onyx
Silicon Dioxide (SiO2)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz Geode (partially formed/chalcedony with iron staining)
Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides
Mineral/Sedimentary Rock Feature
Blue Lace Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Red jasper pebble
Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides
mineral
Red jasper (tumbled)
Jasper, microcrystalline quartz/chalcedony (SiO₂) colored mainly by iron oxides
mineral
Red jasper (likely polished/tumbled)
Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides
mineral
Jasper (likely red/brown jasper)
Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides
mineral
Red Jasper
Jasper (Silicon Dioxide, SiO2)
mineral
Agate
Chalcendony (Silicon Dioxide, SiO2)
mineral
Chalcedony (Variety: Agate)
Silicon Dioxide (SiO2)
mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Bloodstone (Heliotrope)
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
sedimentary
Dyed Agate Slice
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Red Jasper
Jasper (Silicate Mineral - SiO2)
sedimentary
Polished red jasper pebble
Jasper, microcrystalline quartz (SiO₂) colored mainly by hematite/goethite
metamorphic
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Red Jasper
Microcrystalline quartz (SiO2) with Hematite (Fe2O3) impurities
sedimentary
Red Jasper Concretion
Cryptocrystalline Quartz (SiO2)
sedimentary
Fancy Jasper
Silicon Dioxide (SiO2) with impurities
mineral
Banded Calcite (known as Mexican Onyx or Calcite Alabaster)
Calcium Carbonate (CaCO3)
mineral
Red jasper-like pebble
Microcrystalline quartz (chalcedony), typically colored by iron oxides; exact identification is uncertain from the image
mineral
Polished multicolored jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), likely iron- and manganese-stained chert
mineral
Polished carnelian/chalcedony agate
Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide coloring
mineral
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Carnelian (Agate)
SiO2 (Silicon Dioxide) with Iron Oxide impurities
mineral
Blue Lace Agate (Tumbled)
Silicon Dioxide (SiO2) with trace minerals
mineral
Red Jasper
Silicon dioxide (SiO2) with hematite (Fe2O3) inclusions
mineral