Carnelian cabochon
Orange-red variety of chalcedony (microcrystalline quartz), SiO₂
Category
Browse sedimentary (formed from silica deposits) specimens identified by the Rock Identifier community.
Carnelian cabochon
Orange-red variety of chalcedony (microcrystalline quartz), SiO₂
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Agate
Silicon Dioxide (Chalcedony), SiO2
Chert (Flint / Jasper)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Polished carnelian
Carnelian, orange-red cryptocrystalline quartz (SiO₂), chalcedony variety
Yellow Agate (Aqeeq / Chalcedony)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
Chert / Flint Conglomerate
Silicified Sedimentary Breccia (primarily SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
Chert / Flint (Artifact)
Microcrystalline quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Yellow Chalcedony
Silicon Dioxide (SiO2)
Zebra Stone (Silicified Siltstone)
Silicified Siltstone with Quartz/Kaolinite inclusions
Quartz / Agate Nodule
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
Chert (often called Flint)
Microcrystalline quartz (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz (Pink / Rose Quartz variant)
Silicon Dioxide (SiO2)
Chert (specifically Cryptocrystalline Quartz)
Silicon dioxide (SiO2)
Red carnelian (red chalcedony)
Carnelian, a microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides
Chert (Flint / Jasper / Hornstone)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Banded Agate (specifically Carnelian Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
Jasper
Silicon dioxide (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert/Flint Nodule
Microcrystalline Quartz (SiO2)
Chert (Gravel Fragment)
Silicon dioxide (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Pink Chert or Jasperized Chert)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Carnelian
SiO2 (Silicon Dioxide - Chalcedony variant)
Quartz (Chert/Flint variety)
Silicon Dioxide (SiO2)
Conglomerate
Sedimentary Conglomerate
Green Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Chert (Jasper variety)
Microcrystalline quartz (SiO2)
Jasper
Silicon dioxide (SiO2) with iron impurities
Tumbled Jasper and Tiger's Eye
Silicon Dioxide (SiO2) with iron oxide inclusions