Banded Calcite (Mexican Onyx)
Calcite (Calcium Carbonate, CaCO3)
mineral
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Cryptocrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Variety Of Chalcedony, Which Is A Cryptocrystalline Quartz) in the encyclopedia
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Ocean Jasper (Tumbled/Polished)
Silicon Dioxide (Microcrystalline Quartz) - SiO2
mineral
Black Onyx
Cryptocrystalline Quartz (SiO2)
mineral
Bloodstone (Heliotrope)
Cryptocrystalline Quartz (SiO2) with inclusions of Hematite or Chlorite
mineral
Crazy Lace Agate
Chalcedony (SiO2) with microcrystalline quartz
sedimentary
Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles
Mixed gemstones (primarily Silicon Dioxide - SiO2)
mineral
Banded Agate (Chert/Chaldcedony)
Silicon Dioxide (SiO₂)
mineral
Blue Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Jasper (River pebble)
Jasper / Silicon Dioxide (SiO2)
sedimentary
Orbicular Jasper
Silicon Dioxide (SiO2), variety of Chalcedony
Mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Jasper Pendant
Chalcedony (Quartz) - SiO2
Mineral/Sedimentary
Chert (specifically Novaculite)
Microcrystalline Quartz (SiO2)
sedimentary
Agate (Polished Cabochon Slice)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Blue Topaz
Aluminum Silicate Fluoride Hydroxide - Al2SiO4(F,OH)2
gemstone
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Red Jasper
Chalcedony/Quartz (SiO2) with iron inclusions
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Dyed Agate Geode (Pink/Magenta)
Silicon Dioxide (SiO2) - variety of Chalcedony/Quartz
mineral
Smoky quartz
Quartz, silicon dioxide (SiO₂), smoky variety
mineral
Polished carnelian agate
Chalcedony (microcrystalline quartz), SiO₂, orange iron-oxide variety
gemstone
Red Jasper (Chert)
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Tumbled agate and chalcedony specimens
Microcrystalline quartz (SiO₂), chiefly chalcedony/agate
mineral
Agate Bookend / Quartz Geode
Silicon Dioxide (SiO2)
mineral
Green Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Agate
SiO2
mineral
Fulgurite
Fulgurite (Lechatelierite)
metamorphic
Chalcedony or Chert/Jasper with secondary mineral staining
SiO2 (for chalcedony/quartz) with possible secondary copper minerals (e.g., CuSiO3·nH2O for chrysocolla, Cu2(CO3)(OH)2 for malachite) or iron oxides/hydroxides.
Mineral, potentially a rock with chalcedony/jasper.
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Dendritic Agate or Moss Agate Nodules (Septarian-like)
Chalcedony with mineral inclusions (SiO2)
sedimentary
Chalcedony / Agate with Botryoidal Quartz
Silicon Dioxide (SiO2)
sedimentary
Dyed Agate Slice
Chalcedony (Silicon Dioxide, SiO2) with artificial pigment
mineral
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Coffee Bean Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Chert (Tripolitic Chert / Flint Nodules)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (or Flint)
SiO2 (predominantly microcrystalline quartz)
Sedimentary
Agate
Silicon Dioxide (SiO2) - Banded Chalcedony
mineral
Red Jasper (Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary