Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
Category
Browse mineral (variety of chalcedony) specimens identified by the Rock Identifier community.
Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
Grey Chalcedony (Agate)
Silicon Dioxide (SiO2)
Black Onyx
Silicon Dioxide (SiO2) with parallel banding
Chalcedony (specifically Agate or Water-worn Quartzite)
Silicon Dioxide (SiO2)
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
Chalcedony (Blue/Grey Lace Agate)
Silicon Dioxide (SiO2)
Carnelian Agate
Carnelian (Chalcedony / Silicon Dioxide SiO2)
Citrine
Quartz (SiO₂) variety
Geode (Quartz / Chalcedony Geode)
Silicon Dioxide (SiO2) - Quartz / Chalcedony
Tiger's Eye
Quartz (chalcedony) with crocidolite inclusions, SiO2
Moss Agate
Chalcedony (Silicon Dioxide - SiO2) with inclusions
Quartz-rich translucent pebble, possibly iron-stained quartz or chalcedony
Quartz (SiO₂), potentially microcrystalline quartz (chalcedony)
Moss Agate
Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide
Tree Agate
SiO2
Petrified Wood
Silicified Wood (SiO2)
Pyrite in Matrix
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Jasper
Cryptocrystalline Quartz (SiO2)
Tumbled milky quartz (likely chalcedony or quartzite)
Quartz/chalcedony, silicon dioxide (SiO₂)
Tumbled yellow chalcedony (likely citrine or yellow quartz)
Quartz, SiO₂; potentially microcrystalline chalcedony
Eye Agate
Band Chalcedony (Silicon Dioxide, SiO2)
Carnelian
Carnelian Chalcedony (SiO2 with Fe2O3 impurities)
Moss Agate
Chalcedony (SiO2) with inclusions of hornblende or chlorite
Lake Superior Agate
Banded Chalcedony (Silicon Dioxide, SiO2)
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
Agate Geode
Silicon Dioxide (SiO2) - Banded Chalcedony
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
Petrified Wood
Silicified wood (Quartz/Chalcedony - SiO2)
Carnelian Agate
Chalcedony (SiO2 with iron oxide impurities)
Flower Agate
Chalcedony with Opaque Spherulitic Inclusions (SiO2)
Moss Agate
Chalcedony (Silicon Dioxide) with inclusions - SiO2
Carnelian Agate Nodule
Silicon Dioxide (SiO2) - Carnelian Chalcedony
Crazy Lace Agate
Banded Chalcedony (Microcrystalline Quartz, SiO2)
White Agate (Tumbled)
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
Flower Agate
Chalcedony (SiO2) with Scolecite/Opaque inclusions
Chalcedony Nodule (Agate/Chert)
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
Carnelian
SiO2 (Silicon Dioxide) - Translucent Chalcedony
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions