Chrysoprase
Nickel-bearing Chalcedony (SiO2 with inclusions of Ni-compounds like kerolite or pimelite)
mineral
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is microcrystalline quartz) specimens identified by the Rock Identifier community.
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Carnelian
Carnelian (SiO2 - Silicon Dioxide)
mineral
Jasper and Quartz Pebble
Silicon dioxide (SiO2) microcrystalline quartz variety
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
mineral
Red Jasper
Microcrystalline quartz (SiO2) with Hematite (Fe2O3) impurities
sedimentary
Red Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Blue Topaz
Aluminum Silicate Fluoride Hydroxide - Al2SiO4(F,OH)2
gemstone
Iron-rich jasper or hematite-bearing chert
Microcrystalline quartz (SiO₂) with hematite/goethite (Fe₂O₃/FeO(OH))
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Chert (Jasper influence)
Microcrystalline Quartz (SiO2)
sedimentary
Carnelian
Carnelian (Chert/Chalcedony variety of Quartz, SiO2)
mineral
Ocean Jasper
Orbicular Jasper / Chalcedony (SiO2)
Mineral
Smoky quartz
Quartz, silicon dioxide (SiO₂), smoky variety
mineral
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Jasper pebble
Silicon Dioxide (SiO2 with iron oxide inclusions)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Dyed Agate
SiO2 (Silicon Dioxide) - Chalcedony variety
Mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Polished orange chalcedony (likely carnelian)
Microcrystalline quartz, SiO₂; iron-stained chalcedony
gemstone
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Sardonyx or Black Agate variety)
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
mineral
Bloodstone
Chalcedony (Variety Heliotrope), SiO2
mineral
Dyed Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Mineral
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)
Mineral
Carnelian
Quartz (chalcedony variety), SiO2
gemstone
K2 Jasper (K2 Granite)
Azurite in Granite (Biotite Granite with Azurite inclusions)
igneous
Polished agate geode slice
Chalcedony (microcrystalline quartz, SiO₂), banded agate variety
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Chalcedony (Common Opal variant or Agate)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Polished orbicular jasper (probable ocean jasper)
Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral inclusions
gemstone
Imperial Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Mineral Inclusions
Sedimentary
Jasper or Chalcedony
Microcrystalline Quartz (SiO2)
sedimentary
Dyed Agate Geode
Silicon Dioxide (SiO2) - Banded Chalcedony
mineral
Orbicular Jasper (Ocean Jasper or Poppy Jasper variant)
Silicon Dioxide (SiO2) with various inclusions
sedimentary
Smoky Quartz / Chalcedony
Silicon Dioxide (SiO2)
mineral
Chert (specifically Jasper)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Red Jasper
Silicon dioxide (SiO2)
mineral
Chalcedony (River Stone)
Microcrystalline Quartz (SiO2)
mineral
Blue Lace Agate
Cryptocrystalline Quartz (SiO2) with trace minerals
sedimentary