Polished brown jasper pebble
Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities
mineral
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a microcrystalline quartz) specimens identified by the Rock Identifier community.
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Black Onyx
Silicon Dioxide (SiO2)
mineral
Polished banded agate
Agate, a banded variety of chalcedony (microcrystalline SiO₂)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite
Mineral (variety of Chalcedony)
Mookaite Jasper
Siliceous sedimentary rock (variety of Jasper/Chert)
Sedimentary Rock
Tumbled red jasper
Jasper, microcrystalline quartz (SiO₂), commonly colored by iron oxides
mineral
Quartz (Microcrystalline variety)
Silicon Dioxide (SiO2)
mineral
Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Agate (specifically a Yellow/Honey Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Flint with Chalk Cortex
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Raw orange chalcedony (carnelian-like)
Chalcedony, microcrystalline quartz (SiO₂), colored by iron oxides
mineral
Polished agate/geode fragment
Microcrystalline quartz (chalcedony), SiO₂, with possible calcite or quartz cavity lining
mineral
Chert (likely chalcedony-rich flint)
Microcrystalline quartz, SiO₂ (quartz/chalcedony)
sedimentary
Carnelian
Silicon Dioxide (Chalcedony variety), SiO2
mineral
Carnelian (orange chalcedony)
Cryptocrystalline quartz, SiO₂; orange variety of chalcedony
gemstone
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and other mineral inclusions
mineral
Tumbled red jasper
Jasper, microcrystalline quartz (SiO₂) colored by iron oxides
mineral
Jasper
Silicon dioxide (SiO2)
mineral
Polished brecciated jasper
Jasper; microcrystalline quartz (SiO₂) with iron-oxide staining and dark mineral fragments
metamorphic
Chert (and Flint)
Silicon Dioxide (SiO2)
sedimentary
Tumbled carnelian/chalcedony
Chalcedony (microcrystalline quartz), SiO₂; reddish color from iron oxides
mineral
Polished carnelian (likely brecciated agate) heart
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide coloration
gemstone
Carnelian (orange chalcedony), possibly fire agate
Microcrystalline quartz, SiO₂ (chalcedony variety)
gemstone
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Polished jasper pebble
Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities
metamorphic
Polished pink banded agate
Microcrystalline quartz (chalcedony), SiO₂
mineral
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Jasper with Chalcedony
Silicon Dioxide (SiO2)
mineral
Carnelian Agate
Silicon Dioxide (Chalcedony variety)
mineral
Tumbled brown chalcedony (likely chert or agate)
Microcrystalline quartz, SiO₂ (chalcedony); exact variety is uncertain from the image
mineral
Carved jasper bear figurine
Jasper, microcrystalline quartz (SiO₂), likely brecciated or orbicular jasper
mineral
Tumbled yellow jasper (probable)
Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides
mineral
Tumbled jasper (likely red/brown jasper)
Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides
mineral
Brown Jasper
Silicon Dioxide (SiO2)
sedimentary
Red jasper
Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides
mineral
Chert (likely jasper/chalcedony-rich chert)
Microcrystalline quartz, SiO₂
sedimentary
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2)
Sedimentary Rock
Polished red jasper beads
Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides
mineral
Ocean Jasper
Orbicular Jasper / Chalcedony (SiO2)
Mineral
Jasper (specifically Chert/Ironstone)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary