Jasper (specifically Red Jasper or Iron-stained Chert)
Silicon dioxide (SiO2) with iron oxide inclusions
Category
Browse mineral, variety of chalcedony (microcrystalline quartz) specimens identified by the Rock Identifier community.
Jasper (specifically Red Jasper or Iron-stained Chert)
Silicon dioxide (SiO2) with iron oxide inclusions
Jasper
Silicon dioxide (SiO2)
Yellow Chalcedony (or Yellow Jasper / Agate)
Silicon Dioxide (SiO2)
Tumbled brown stone, likely jasper or iron-stained quartz
Microcrystalline quartz (SiO₂), possibly chalcedony/jasper with iron-oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) with hematite inclusions
Tumbled brown agate or jasper
Microcrystalline quartz, SiO₂ (likely chalcedony/agate with iron oxides)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Jasper pebble
Silicon Dioxide (SiO2) with impurities
Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
Red Jasper
Jasper (a variety of Chalcedony, SiO₂)
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
Moss Agate
Silicon Dioxide (Chalcedony variety)
Likely tumbled jasper or iron-stained quartzite
Microcrystalline quartz (SiO₂), possibly quartzite with iron-oxide inclusions
Polished Jasper (Mushroom Carving)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Dyed Blue Agate Slice
Silicon Dioxide (Chalcedony variety), $SiO_2$
Blue Lace Agate
Silicon Dioxide (SiO2), variety of Chalcedony
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
Yellow Jasper
Silicon dioxide (SiO2)
Banded Agate
Chalcedony (SiO2)
Agate Geode
Silicon Dioxide (SiO2) - Variety Agate with Quartz crystal center
Jasper-Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Yellow Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Carnelian (red chalcedony)
Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Polished agate/chalcedony slab
Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide inclusions
Banded Agate
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2) - a variety of Chalcedony (Cryptocrystalline Quartz)
Tumbled brown chalcedony (possibly carnelian or jasper)
Microcrystalline quartz, SiO₂; likely iron-stained chalcedony
Blue Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz - SiO₂)
Green Jasper
Jasper (Silicon Dioxide, SiO2)
Chalcedony Geode
Silicon Dioxide (SiO2)
Jasper (Yellow/Brown variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Coffee Bean Jasper
Silicon Dioxide (SiO2) with impurities
Crazy Lace Agate
Silicon Dioxide (SiO2) with iron and aluminum inclusions
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
Tumbled blue chalcedony, likely blue agate
Chalcedony (microcrystalline quartz, SiO₂), possibly dyed
Crazy Lace Agate
Agate (Cryptocrystalline Quartz), Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline quartz (SiO2)
Tumbled amber-colored chalcedony (likely carnelian)
Chalcedony, microcrystalline quartz (SiO₂); orange-red variety called carnelian
Blue chalcedony (likely dyed or coated)
Chalcedony, microcrystalline quartz (SiO₂)
Geode / Fossilized Gastropod or Shell Cast
Silicon dioxide (Quartz) replacement / fossil mold
Yellow Jasper with Hematite
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions