Chert (Iron-stained)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is microcrystalline quartz) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz) in the encyclopedia
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Tumbled Agate and Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2)
sedimentary
Carnelian Agate Nodule
Chalcedony (SiO2) with Iron Oxide inclusions
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Dyed Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
igneous
Chert (Jasper variety)
Chert (SiO2)
sedimentary
Chalcedony (Common Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Geode
Quartz / Chalcedony nodule
sedimentary
Red jasper (tumbled)
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
mineral
Banded Calcite (often sold as 'Mexican Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Jasper
Silicon Dioxide (Quartz variety, SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
mineral
Jasper (likely Brecciated or Multi-colored)
Jasper (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Agate
Chalcedony (Cryptocrystalline variety of Quartz, SiO2)
mineral
Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)
Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
mineral
Hag Stone
Perforated Sedimentary Rock / Flint / Limestone
sedimentary
Zebra Jasper
Jasper (variety of Quartz/Chalcedony), SiO2
sedimentary
Jasper (Iron-stained Chert)
Silicon Dioxide (SiO2) with impurities of Hematite or Goethite
sedimentary
Tumbled yellow chalcedony (likely yellow jasper or citrine-colored quartz)
Microcrystalline quartz, SiO₂; coloration may come from iron oxides or fine inclusions
mineral
Yellow Quartz / Chalcedony
Silicon Dioxide (SiO2)
mineral
Fancy Jasper
Silicon Dioxide (SiO2) with iron and organic inclusions
sedimentary
Jasper (Green Jasper/Chert)
Silicon Dioxide (SiO2)
sedimentary
Carnelian (orange chalcedony)
Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored
gemstone
Agate (Chalcedony Variation)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Tumbled brown agate
Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions
mineral
Polished jasper (likely brecciated or scenic jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
gemstone
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony / Agate Pebble
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Black Onyx
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Onyx (Calcite Marble)
Calcite (CaCO3) - Trap-rock or Cave Onyx
sedimentary
Chalcedony
Silicon Dioxide (SiO2)
mineral