Agate (Puddingstone style)
Silicon Dioxide (SiO2) with impurities
mineral
Category
Sedimentary Rock (Technically A Variety Of Chalcedony)
Browse sedimentary rock (technically a variety of chalcedony) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Technically A Variety Of Chalcedony) in the encyclopedia
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Polished brecciated jasper
Jasper (microcrystalline quartz, SiO₂), brecciated variety
mineral
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
igneous
Jasper
Microcrystalline Quartz (SiO2)
mineral
Jasper with Quartz
Silicon dioxide (SiO2)
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions
mineral
Blue Chalcedony (Blue Lace Agate variety)
Silicon Dioxide (SiO₂)
mineral
Plume Agate or Moss Agate
Agate (SiO2)
mineral
Tumbled carnelian (likely)
Carnelian, a chalcedony variety of microcrystalline quartz (SiO₂), colored mainly by iron oxides
gemstone
Red jasper
Jasper, an opaque microcrystalline quartz variety (SiO₂), colored mainly by iron oxides
mineral
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Jasper (likely brecciated or chalcedony-rich jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide impurities
sedimentary
Dalmatian Stone
Dalmatian Jasper (Aplite rock composition)
igneous
Geode with Quartz and possibly Jasper/Hematite
Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides
Mineral/Sedimentary Geode
Dragon Blood Jasper
Epidote-containing Quartz Chalcedony (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))
metamorphic
Chalcedony Nodule (Commonly known as Agate or Chert)
Microcrystalline Quartz (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
sedimentary
Agate
SiO2 (Chalcedony/Quartz)
sedimentary
Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Red jasper
Jasper, a microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
mineral
Dendritic Agate
Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)
mineral
Amethyst Sage Agate
Silicon Dioxide (SiO2) with trace minerals (Manganese/Iron oxides)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Jasper
Chalcedony (Microcrystalline Quartz) - SiO2
sedimentary or metamorphic
Tumbled red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides
mineral
Red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
mineral
Jasper and Chalcedony Composite
Silicon Dioxide (SiO2) microcrystalline quartz
sedimentary
Chalcedony
Silicon Dioxide (SiO2)
mineral
Dendritic Agate (Tumbled)
Silicon Dioxide (SiO2) with inclusions
mineral
Tumbled red jasper (likely dyed)
Jasper, microcrystalline quartz/chalcedony (SiO₂), colored by iron oxides; possibly dyed
mineral
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
mineral
Chalcedony (Agate/Carnelian)
Cryptocrystalline Silicon Dioxide (SiO2)
mineral
Leopard Skin Jasper
Jasper (Silicon Dioxide with impurities), SiO2
sedimentary
Quartz Geode Pebble
Silicon Dioxide (SiO2)
sedimentary
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Tumbled brown jasper
Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides
mineral
Picture Jasper
Silicon Dioxide (SiO2)
sedimentary
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Jasper (Red/Brown)
Microcrystalline Quartz (SiO2) with Iron Oxide inclusions
sedimentary
Tumbled red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
mineral