Red jasper (likely tumbled)
Jasper, microcrystalline quartz/chalcedony (SiO₂), colored mainly by iron oxides
Category
Browse mineral (variety of chalcedony) specimens identified by the Rock Identifier community.
Red jasper (likely tumbled)
Jasper, microcrystalline quartz/chalcedony (SiO₂), colored mainly by iron oxides
Yellow Jasper
Silicon dioxide (SiO2)
Tumbled carnelian/chalcedony
Chalcedony (microcrystalline quartz), SiO₂; reddish color from iron oxides
Yellow Jasper
Silicon dioxide, SiO2
Agate (or Quartz with Agate banding)
Silicon dioxide (SiO2)
Agate
SiO2
Plume Agate or Moss Agate
Agate (SiO2)
Chalcedony
Chalcedony (SiO2)
Chalcedony (Banded/Mottled Variety)
Chalcedony (a cryptocrystalline variety of Quartz, SiO2)
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Yellow Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)
Tumbled jasper, likely picture jasper or brecciated jasper
Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide pigments
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Jasper
Silicon Dioxide (SiO2)
Blue Lace Agate
Chalcedony (SiO2)
Geode (Unopened)
Quartz/Chalcedony concretion
Chalcedony
Silicon Dioxide (SiO2)
Red jasper-like chalcedony pebble
Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Yellow Agate
Silicon Dioxide (SiO2)
Carnelian
Silicon dioxide (SiO2) with Iron Oxide impurities
Yellow Chalcedony
Silicon Dioxide (SiO2)
Jasper
Chalcedony (SiO2)
Chalcedony
Silicon dioxide (SiO2) - Microcrystalline quartz
Honey-colored chalcedony (rough agate/chert)
Microcrystalline quartz, SiO₂; likely chalcedony with iron-oxide staining
Jasper
Silicon dioxide (SiO2)
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with various inclusions
Chalcedony
Silicon Dioxide (SiO2)
Blue Lace Agate
Chalcedony (SiO2)
Sardonyx or Carnelian Agate
Silicon Dioxide (SiO2) with iron impurities
Banded Jasper
Silicon Dioxide with Iron Oxide impurities (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite inclusions
Agate
SiO2 (Silicon dioxide, chalcedony variety)
Chalcedony
Chalcedony (a microcrystalline variety of Quartz, SiO2)
Jasper (Iron-stained Quartzite/Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
Tumbled jasper or chalcedony pebble
Microcrystalline quartz, SiO₂ (likely jasper/chalcedony)
White Agate (Chalcedony)
Chalcedony (SiO2)
Jasper
Silicon dioxide (SiO2) with iron oxide impurities
Chalcedony
Chalcedony (SiO2)
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
Chalcedony (Tumbled)
Cryptocrystalline Quartz (SiO2)
Chalcedony in Matrix
Silicon Dioxide (SiO2)