Amber and Tumbled Stones
Fossilized Tree Resin (Succinite)
fossil
Category
Organic (Biological Organism)
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Pumice
Pumiceous volcanic glass
igneous
Amber
Succinite (Resinite)
fossil
Amber
Succinite (C10H16O)
mineral
Coral Fossil (Favosites)
Favosites (Extinct genus of tabulate corals)
sedimentary
Amber
Succinite (C10H16O)
Mineraloid (Organic)
Amber
Succinite (Resinite)
mineraloid
Pink Opal
Hydrated silica (SiO2 "n H2O)
mineral
Green Moss Agate
Silicon Dioxide with inclusions (SiO2 + Mn/Fe)
sedimentary
Amber
Amber (Succinite), fossilized tree resin
Mineraloid
Fossiliferous Limestone (with Coralline Inclusions)
Calcium Carbonate (CaCO3)
sedimentary
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (often called Jasper or River Siltstone)
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood (Agatized/Silicified Wood)
Silicified Wood (SiO2)
sedimentary
Black Freshwater Pearls
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
mineral
Tree Agate
Silicon Dioxide (SiO2) with Dendritic Inclusions
Mineral
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Bryozoan Fossil
Phylum Bryozoa (commonly known as 'moss animals')
sedimentary
Black Pearl (Tahitian Pearl)
Aragonite / Calcite (CaCO3) with Conchiolin
mineral
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Banded Sandstone (Hag Stone)
Arenite Sandstone (SiO2 with impurities)
sedimentary
Travertine
Tufa limestone (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Green Moss Agate
Agate (Silicon Dioxide - SiO2 with inclusions of Manganese/Iron oxides)
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (primarily quartz/chalcedony replacing organic wood structure)
fossil
Amber (Copal)
Organic gemstone, fossilized tree resin (often immature amber or copal)
Mineral
Polished/tumbled calcite
Calcite (calcium carbonate, CaCO₃)
mineral
Chert Nodule / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Coal (Bituminous or Anthracite)
Carbonaceous Sedimentary Rock
sedimentary
Chert Concretion
Microcrystalline Quartz (SiO2)
sedimentary
Red Coral (Precious Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
gemstone
Moss Agate (Crescent Moon Shape)
Silicon Dioxide (SiO2) with iron/manganese inclusions
mineral
Ironstone Nodules in Chalk/Limestone
Limonite/Goethite concretions (FeO(OH)·nH2O) in Calcium Carbonate matrix (CaCO3)
sedimentary
Quartz Pebble (with Iron Inclusions)
Silicon Dioxide (SiO2)
mineral
Fossil Crab
Decapoda (likely Avitelmessus or Raninidae family)
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation containing Hematite (Fe2O3) and Magnetite (Fe3O4)
sedimentary
Chert (Jasper/Flint variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Moss Agate
Silicon dioxide (SiO2) with mineral inclusions
Mineral
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxide
mineral
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
sedimentary
Shale with Pyrite
Clastic sedimentary rock containing Iron Disulfide (FeS2)
sedimentary