Yellow jasper (likely polished/tumbled)
Microcrystalline quartz, SiO₂, colored by iron oxides; exact identification is uncertain from the image
mineral
Category
Sedimentary Rock (Technically A Variety Of Chalcedony)
Browse sedimentary rock (technically a variety of chalcedony) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Technically A Variety Of Chalcedony) in the encyclopedia
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Yellow Jasper
Chalcedony (SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Gray Agate
Cryptocrystalline Quartz (SiO2)
mineral
Chert (Flint)
Microcrystalline quartz (SiO2)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Yellow Agate
Silicon Dioxide (SiO2)
gemstone
Jasper and Agate
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Chert (Chalcedony/Agate variety)
Silicon dioxide (SiO2)
sedimentary
Polished brown agate (likely carnelian/chalcedony)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide coloration
gemstone
Red-and-brown agate bead bracelet
Agate, a microcrystalline variety of quartz (SiO₂), likely colored chalcedony/carnelian
mineral
Leopard Skin Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Bumblebee Jasper
Fossiliferous Calcite containing Orpiment and Realgar
sedimentary
Bauxite
AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Druzy Quartz Geode (Oco or Moroccan variety)
Silicon Dioxide (SiO2)
mineral
Polished orbicular jasper (likely ocean jasper)
Jasper, a microcrystalline variety of quartz (SiO₂), with iron-oxide and other mineral inclusions
mineral
Chert (likely flint-bearing chert)
Microcrystalline quartz, SiO₂ (chalcedony/quartz aggregate)
sedimentary
Grey Agate (Tumbled)
Silicon Dioxide (SiO2)
mineral
Ocean Jasper
Orbicular Jasper (Silicon Dioxide - SiO2)
sedimentary
Tumbled reddish-brown stone, possibly jasper or quartzite
Uncertain; likely microcrystalline quartz (SiO₂), potentially iron-stained jasper
mineral
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
mineral
Agate
SiO2 (Silicon dioxide, chalcedony variety)
Mineral
Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles
Mixed gemstones (primarily Silicon Dioxide - SiO2)
mineral
Red jasper pebble
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
metamorphic
Tumbled banded agate
Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide coloring
gemstone
Polished jasper pebble
Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions
mineral
Dark gray chert or flint nodule
Microcrystalline quartz (SiO₂), commonly chalcedony/quartz
sedimentary
Yellow Jasper
Silicon dioxide (SiO2)
sedimentary
Carnelian (red chalcedony)
Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored variety
gemstone
Yellow-brown jasper or silicified volcanic rock
Microcrystalline quartz (chalcedony), SiO₂, likely jasper
mineral
Jasper with Quartz Veining
Silicon Dioxide (SiO2) with impurities
sedimentary
Banded Calcite (often sold as 'Mexican Onyx' or 'Calcite Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Yellow Agate
Silicon Dioxide (SiO2)
mineral
Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Polished jasper pebble
Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions
mineral
Carnelian Agate
Silicon Dioxide (Chalcedony variety)
mineral
Tumbled agate (likely moss or scenic agate)
Microcrystalline quartz, primarily chalcedony (SiO₂), with iron-oxide and possible mineral inclusions
gemstone
Polished yellow jasper
Jasper, microcrystalline quartz (SiO₂) with iron-oxide impurities
metamorphic
Tumbled yellow-brown jasper or chalcedony
Microcrystalline quartz (SiO₂), likely iron-stained jasper/chalcedony
mineral