Petrified Wood
Silicified Wood (primarily SiO2)
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
View all →
Jasper
Silicon dioxide (SiO2)
sedimentary
Chert / Flint Nodular Fragment
Microcrystalline quartz (SiO2)
sedimentary
Banded Agate (variety of Chalcedony)
Agate (SiO2)
mineral
Jasper Geode
Silicon Dioxide (SiO2) with impurities
sedimentary
Dalmatian Stone
Aplite (often incorrectly called Dalmatian Jasper)
igneous
Quartz / Chert
Silicon Dioxide (SiO2)
Mineral / Sedimentary
Chalcedony (Yellow/Honey variety)
Microcrystalline Quartz (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert Pebble/Nodule
Chert (a microcrystalline or cryptocrystalline sedimentary form of quartz, SiO2)
Sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon dioxide (SiO2)
sedimentary
Tiger's Eye
Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)
Mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Jadeite
Jadeite (NaAlSi2O6)
metamorphic
Blue Dyed Agate Geode (Slice)
Silicon Dioxide (SiO2) - Chalcedony / Quartz
mineral
Chert (or Microcrystalline Quartz)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Orca Agate
Chalcedony (Microcrystalline Quartz, SiO2)
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Chert (Chalcedony/Flint)
Silicon Dioxide (SiO2)
sedimentary
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Agate
SiO2 (Silicon dioxide, chalcedony variety)
Mineral
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Lake Superior Agate
Banded Chalcedony (Silicon Dioxide, SiO2)
sedimentary
Carnelian (Tumbled Quartz)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper Shard / Chert
Silicon dioxide (SiO2)
sedimentary
Tumbled jasper
Microcrystalline quartz (SiO₂), commonly iron-rich jasper
mineral
Hematite
Iron(III) oxide (Fe2O3)
Mineral
Jasper (specifically Red or Brecciated Jasper variant)
Jasper (Microcrystalline Quartz - SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Montana Moss Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Banded Agate Coaster
Silicon Dioxide (SiO2) - Variety Agate / Chalcedony
mineral
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Botryoidal Chalcedony (Geode fragment)
Silicon Dioxide (SiO2)
mineral
Agate (Turtle Carving)
Agate (Cryptocrystalline variety of Silica, SiO2)
mineral
Chert Pebble (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Picture Jasper (specifically Biggs or Deschutes variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary