Black Onyx
Silicon dioxide (SiO2) with parallel banded structure
Category
Browse mineral (variety of chalcedony) specimens identified by the Rock Identifier community.
Black Onyx
Silicon dioxide (SiO2) with parallel banded structure
Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial colorants
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite
Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides
Carnelian
Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO2)
Tree Agate
Silicon Dioxide with Chlorite inclusions (SiO2)
Bloodstone / Heliotrope
Silicon dioxide (SiO2) with inclusions
Blue Lace Agate
Silicon Dioxide (SiO₂)
Red Jasper
Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Banded Agate (specifically Botryoidal/Orbicular Agate)
Silicon Dioxide (SiO2)
Red Jasper (beads)
SiO₂ (Silicon Dioxide)
Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
Chalcedony (Agate/Carnelian)
Cryptocrystalline Silicon Dioxide (SiO2)
Chrysoprase
Chalcedony (Silicon Dioxide, SiO2), flavored by Nickel
Chrysoprase
Chalcedony (Silicon Dioxide, SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Black Onyx
Silicon dioxide (SiO2)
Chalcedony (Banded/Mottled Variety)
Chalcedony (a cryptocrystalline variety of Quartz, SiO2)
Yellow Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)
Jasper
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)
Yellow Chalcedony
Silicon Dioxide (SiO2)
Chalcedony (Agate)
Silicon Dioxide (SiO2)
Chalcedony
Silicon dioxide (SiO2) - Microcrystalline quartz
Chalcedony
Silicon Dioxide (SiO2)
Blue Lace Agate
Chalcedony (SiO2)
Red Chalcedony (likely dyed)
Chalcedony (a variety of Quartz), SiO2
Jasper
Silicon dioxide (SiO2) with iron oxide impurities
Chalcedony
Chalcedony (a microcrystalline variety of Quartz, SiO2)
Jasper (Iron-stained Quartzite/Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
White Agate (Chalcedony)
Chalcedony (SiO2)
Chrysoprase
Chalcedony (cryptocrystalline silica containing nickel); Chemical Formula: SiO2 with Ni impurities
Bloodstone (Heliotrope)
Cryptocrystalline Quartz (SiO2) with inclusions of Hematite or Chlorite
Ocean Jasper
Silicon dioxide with impurities (SiO2 + impurities)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Fancy Jasper
Silicon Dioxide (SiO2)
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)