Amber
Succinite (Fossilized Tree Resin)
mineraloid
Category
Organic Gemstone (Often Associated With Sedimentary Sequences)
Browse organic gemstone (often associated with sedimentary sequences) specimens identified by the Rock Identifier community.
Learn about Organic Gemstone (Often Associated With Sedimentary Sequences) in the encyclopedia
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Chert (White Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (Fossiliferous)
Silicon dioxide (SiO2)
sedimentary
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Black Sand (Magnetite Sand)
Magnetite-rich Placers (Fe3O4)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper (Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jasper with Quartz Veining
Silicon Dioxide (SiO2) with impurities such as Fe2O3
sedimentary
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Limestone (Fossiliferous)
Calcium Carbonate (CaCO3) - Bioclastic Limestone
sedimentary
Banded Chert
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (with Limestone matrix)
Silicon dioxide (SiO2)
sedimentary
Micro-crystalline Quartz Pebble (Chert)
Silicon dioxide (SiO2)
sedimentary
Chert (Flint)
Chert (SiO2)
sedimentary
Chert (with potential fossil inclusion)
Microcrystalline Quartz (SiO2)
sedimentary
Coal
Bituminous Coal (organic sedimentary rock)
sedimentary
Jasper pebble
Jasper (Silicon Dioxide, SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Ironstone Concretion (Limonite/Goethite)
Iron oxide concretion (contains FeO(OH)·nH2O)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony/Opal replacing organic matter)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Concretion
Septarian Concretion (Fragmentary)
sedimentary
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony (Agate/Jasper mix)
Cryptocrystalline Sillimanite (Quartz) - SiO2
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
sedimentary
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Zebra Rock / Zebra Marble
Banded Limestone-Marble Transition
metamorphic
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Banded Chert (River Cobble)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Iron-Stained)
Chert (Silicon Dioxide, SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (primarily Quartz/SiO2)
mineral
Chert (Smooth River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint/Jasper variety)
Silicon Dioxide (SiO2)
sedimentary