Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Category
Organic Gemstone (Often Associated With Sedimentary Sequences)
Browse organic gemstone (often associated with sedimentary sequences) specimens identified by the Rock Identifier community.
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Probable amber fragment
Amber (fossilized plant resin; chiefly amorphous organic resin, commonly dominated by succinite)
gemstone
Milky Quartz
Silicon dioxide (SiO2)
mineral
Amber
Succinite (C10H16O)
gemstone
Galena
Lead Sulfide (PbS)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
sedimentary
Rose Quartz
Quartz (SiO₂), variety Rose Quartz
Mineral
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
sedimentary
Manganese Dendrite on Siltstone
Manganese Oxide (pyrolusite or psilomelane) Dendrites
mineral/sedimentary
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sandstone Concretion
Limonitic Sandstone Concretion
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Amber
Fossilized Tree Resin
gemstone
Pearl
Calcium Carbonate (Aragonite/Calcite) with Conchiolin, CaCO3
gemstone
Amber
Succinite (Formula: C10H16O)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Lapis Lazuli
Complex silicate rock (primarily Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)
gemstone
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Glauconitic Sandstone
Glauconitic Sandstone (Greensand)
sedimentary
Zebra Stone (Banded Chert or Limestone)
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions
sedimentary
Amber
Succinite (C10H16O)
mineraloid
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Ruby in Marble
Corundum (Al2O3) in Calcite (CaCO3) matrix
metamorphic
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Microcrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Ferruginous Sandstone (Ironstone)
Sedimentary rock with high iron oxide content (Fe2O3 / FeO(OH))
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Raw Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Fossiliferous Limestone
Bioclastic Limestone (CaCO3)
sedimentary
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Chert or flint
Microcrystalline quartz (SiO₂), likely chalcedony-rich chert
sedimentary
Chert (Yellow Jasper)
Silicon Dioxide (SiO2)
sedimentary
Geode with Quartz Crystal Cavity
Silicon Dioxide (SiO2) in Calcareous/Siliceous Matrix
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary