Jasper
Silicon dioxide (SiO2)
Category
Browse metamorphic (localized) or sedimentary specimens identified by the Rock Identifier community.
Jasper
Silicon dioxide (SiO2)
Common Opal in Host Rock
Hydrated Silica (SiO2·nH2O)
Dyed Agate
Silicon Dioxide (SiO2)
Dyed Blue Agate
Silicon Dioxide (SiO2)
Chalcedony (Agate/Blue Quartzite)
Silicon Dioxide (SiO2)
Aura Quartz Geodes (Lab-Altered)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition
Carnelian
Carnelian (Silica, SiO2)
Blue Agate (likely Dyed)
Silicon Dioxide (SiO2) - Chalcedony variety
Druzy Quartz
Silicon Dioxide (SiO2)
Dolomite on Prehnite (Saddle-shaped Dolomite)
Dolomite [CaMg(CO3)2] on Prehnite [Ca2Al(AlSi3O10)(OH)2]
Yellow Jasper (Chert variant)
Silicon Dioxide (SiO2) with iron inclusions
Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
Tree Agate
Silicon Dioxide (SiO2) with dendritic inclusions
Red Jasper (Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Agate
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
Copper Nugget
Native Copper (Cu)
Engineer Quartz/Quartzite
SiO2 (Silicon Dioxide with binders)
Polygenetic Conglomerate (Puddingstone)
Conglomerate (SiO2 matrix with mixed clasts)
Agate (Moss or Banded Agate variety)
Agate (Silicon Dioxide - SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2) with artificial pigment
Pink Dyed Agate
Silicon Dioxide (SiO2) with synthetic pigment
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Jasper
Jasper (Silica/Silicon Dioxide, SiO2)
Jasper (Iron-stained Chalcedony)
SiO2 with Fe2O3 (Iron Oxide) impurities
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Turquoise
Turquoise - CuAl6(PO4)4(OH)8·4H2O
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Carnelian
Carnelian Chalcedony (SiO2)
Carnelian Agate
Carnelian (SiO2 with iron oxide impurities)
Banded Jasper
Silicon Dioxide (SiO2) with iron oxide and clay impurities
Quartz Geode
Silicon Dioxide (SiO2)
Carnelian
Carnelian (a variety of Chalcedony, SiO2) colored by iron oxide
Red Jasper (possibly Brecciated)
Jasper (Silicon Dioxide, SiO2)
Agate Geode / Nodular Chalcedony
Silicon Dioxide (SiO2) with impurities
Quartz Geode
Silicon Dioxide (SiO2)
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous Phosphate of Copper and Aluminum)
Aquamarine and clear quartz
Aquamarine (Be3Al2Si6O18), Quartz (SiO2)
Jasper and Aquamarine (likely)
Jasper (Cryptocrystalline Quartz (SiO2)), Aquamarine (Beryl (Be3Al2Si6O18))