Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
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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Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
mineral
Tumbled brown jasper (likely brecciated jasper)
Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
mineral
Flint / Chert
Silicon dioxide (SiO2)
sedimentary
Jasper or Chalcedony
Microcrystalline Quartz (SiO2)
sedimentary
Jasper River Stone
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Dendritic Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
mineral
Red Jasper
Jasper (a variety of Chalcedony, SiO₂)
Mineraloid (cryptocrystalline quartz)
Agate
Silicon dioxide (SiO2)
gemstone
Jasper pebble (Yellow/Brown Jasper)
Silicon Dioxide (Microcrystalline Quartz, SiO2 with Iron Oxide impurities)
sedimentary
Red Jasper with Quartz and Hematite
Silicon Dioxide (SiO2) with Ferric Iron inclusions
sedimentary
Red jasper-like chalcedony pebble
Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper
mineral
Banded Jasper
Silicon Dioxide with Iron Oxide impurities (SiO2)
sedimentary
Jasper (Green Jasper/Heliotrope variety)
Silicon Dioxide (SiO2)
sedimentary
Dendritic Agate (specifically Orange/Tumbled)
Silicon Dioxide (SiO2) with Oxide Inclusions
mineral
Agate
Chalcedony (SiO2)
mineral
Rainbow Moonstone
White Labradorite (Feldspar variety)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Yellow Chalcedony
Silicon Dioxide (SiO2)
mineral
Tumbled Agate (Dyed Blue)
Silicon Dioxide (Chalcedony variety)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Banded Agate (Onyx variant)
Silicon dioxide (SiO2)
sedimentary
Travertine
Calcium Carbonate (CaCO3)
sedimentary
Jasper / Chert (Tumbled)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint or Jasper)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Ocean Jasper
Silicon dioxide with impurities (SiO2 + impurities)
sedimentary
Blue Lace Agate
Agate (Variety of Chalcedony, SiO2)
sedimentary
Chalcedony on Matrix (Botryoidal Agate)
Silicon Dioxide (SiO2)
mineral
Dragon Blood Jasper
Epidote-rich Quartzite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Tumbled red jasper
Jasper, microcrystalline quartz (SiO₂), commonly colored by iron oxides
mineral
Bauxite
Al2O3·2H2O (principally composed of gibbsite, boehmite, and diaspore)
sedimentary
Brecciated jasper/chert
Microcrystalline quartz (SiO₂), with iron-oxide and clay inclusions
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Chalcedony (Common Opal variant or Chert/Flint)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
mineral
Rhyolite (Leopard Skin Jasper)
Rhyolite (Silicon Dioxide with impurities)
igneous
Agate in Matrix
Silicon Dioxide (SiO2) within host rock
mineral
Chalcedony (specifically Blue Chalcedony or Common Opal variety)
Silicon Dioxide (SiO₂)
mineral
Carnelian (Tumbled)
Carnelian (variety of Chalcedony, SiO2)
mineral
Polished carnelian (likely)
Carnelian, a reddish-orange cryptocrystalline quartz variety; SiO₂
gemstone
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary