Common Pebble / Sedimentary Rock Fragment
Lithified clastic sediment
sedimentary
Category
Sedimentary (Cryptocrystalline Quartz)
Browse sedimentary (cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Cryptocrystalline Quartz) in the encyclopedia
View all →
Jasper River Stone
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony with Quartz
Silicon Dioxide (SiO2)
mineral
Hag Stone
Perforated Quartz / Sedimentary Rock
sedimentary
Quartz (Chert/Chalcedony Variety)
Silicon Dioxide (SiO2)
mineral
Flint
SiO2 (Microcrystalline Quartz / Chert)
sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Mixed River Stones and Agates
Mixed Silicates and Ironstones (primarily SiO2 and Fe2O3)
sedimentary
Quartz Pebble (Iron-stained Chalcedony / Chert)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Jasper Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Banded Agate
Cryptocrystalline Silicon Dioxide (SiO2)
gemstone
Chert (Jasper/Flint variety)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert Arrowhead (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Agate/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Agate Geode (Unopened)
Cryptocrystalline Quartz (SiO2) with Chalcedony
mineral
Dragon Vein Agate
Chalcedony (cryptocrystalline Quartz), SiO2
mineral
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Chert (Arrowhead)
Chert (SiO2)
sedimentary
Quartz (Jasper / Chert)
Silicon Dioxide (SiO2)
sedimentary
Banded Calcite (often sold as 'Mexican Onyx')
Calcite (Calcium Carbonate - CaCO3)
sedimentary
Green Jasper / Green Quartz
Silicon dioxide (SiO2) with mineral impurities
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Chert (Arrowhead Debitage or Spall)
Silicon Dioxide (SiO₂)
sedimentary
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Banded Agate (Carnelian-Agate)
Silicon Dioxide (SiO2)
mineral
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
sedimentary
Chert (Flint variety)
Chert (SiO2)
sedimentary
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
mineral
Chert (Arrowhead Artifact)
Microcrystalline Quartz (SiO2)
sedimentary
Breciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Carnelian
Carnelian (Cryptocrystalline Quartz, SiO2)
mineral