Jasper
Silicon Dioxide (SiO2) - Impure Variety of Chert
sedimentary
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Cryptocrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Variety Of Chalcedony, Which Is A Cryptocrystalline Quartz) in the encyclopedia
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Tumbled Gray Agate
Silicon Dioxide (SiO2)
mineral
Plume Agate
Silicon Dioxide (SiO2)
mineral
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Orange chalcedony (likely carnelian), polished shard
Microcrystalline quartz, SiO₂; chalcedony variety, orange iron-oxide coloration
gemstone
Agate
Silicon dioxide (SiO2)
mineral
Tumbled carnelian
Carnelian, a red-orange variety of cryptocrystalline chalcedony (SiO₂)
gemstone
Blue Chalcedony (Blue Lace Agate variety)
Silicon Dioxide (SiO₂)
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Jasper (specifically Yellow or Bumblebee-like Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Red jasper (iron-rich chalcedony), possibly brecciated
Jasper: microcrystalline quartz, SiO₂, colored mainly by iron oxides/hydroxides
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Tree Agate (or Moss Agate), faceted into a crystal tower
Dendritic Agate (Silicon Dioxide, SiO2)
Mineral
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
sedimentary
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Mineral
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
mineral
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2
sedimentary
Chert (specifically Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Tumbled purple jasper (likely rhyolite-derived jasper)
Microcrystalline quartz (SiO₂) with iron/manganese oxide impurities; possibly purple rhyolitic jasper
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2) with iron impurities
sedimentary
Polished blue-banded agate slice
Agate (microcrystalline quartz, SiO₂; chiefly chalcedony)
mineral
Thunderegg (specifically a Jasper/Agate-filled Geode nodule)
Silicon Dioxide (SiO2) within Rhyolitic Matrix
igneous
Botryoidal Chalcedony
Chalcedony (SiO2)
Mineral
Tumbled milky quartz (likely chalcedony or quartzite)
Quartz/chalcedony, silicon dioxide (SiO₂)
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Quartz (specifically Milky/White Quartz)
Silicon Dioxide (SiO2)
mineral
Green polished gemstone (likely chrysoprase or aventurine)
Chrysoprase: microcrystalline quartz, SiO₂, colored by nickel; possible aventurine quartz: SiO₂ with fuchsite mica
gemstone
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony
Chalcedony (SiO2)
mineral
Yellow Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Gray Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony Nodule in Matrix
Silicon Dioxide (SiO2)
mineral
Jasper (Imperial Jasper style)
Silicon Dioxide (SiO2) with impurities
sedimentary
Tumbled jasper (likely brecciated or leopard jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide inclusions
mineral
Blue Lace Agate
Chalcedony (SiO2) with trace minerals
mineral
Pink chalcedony (likely rough agate/chalcedony)
Microcrystalline quartz, SiO₂; chalcedony variety, possibly iron-bearing
mineral
Chert (specifically Flint or Dark Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert and Chalcedony
Cryptocrystalline Quartz (SiO2)
sedimentary