Sedimentary (Fossilized Organic Remains)

Petrified Wood

Silicified Wood (primarily SiO₂ - Silicon Dioxide)

Jasper (specifically a banded or dark variety)

Silicon Dioxide (SiO2) with impurities

Fossiliferous Limestone (Crinoidal)

Calcite-bearing bioclastic packstone (CaCO3)

Fossiliferous Limestone (Gritstone/Marl)

CaCO3 (Calcium Carbonate) with Fossil Inclusions

Fancy Jasper (Agate/Chert mix)

Silicon Dioxide (SiO2) with impurities

Petrified Wood

Silicified wood (principally SiO2)

Chert (also known as Flint or Common Chalcedony)

Cryptocrystalline Silica (SiO2)

Banded Agate (specifically Moss Agate or Plume Agate variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Red Jasper

Silicon dioxide (SiO2) with iron oxide (Fe2O3) inclusions

Mixed Quartz and Jasper Pebbles

Silicon Dioxide (SiO2)

Chert (and Petrified Wood)

Silicon Dioxide (SiO2)

Petrified Wood (Agatized/Silicified Wood)

Silicified Wood / Chalcedony (SiO2)

Chert Pebble (Flint)

Microcrystalline/Cryptocrystalline Quartz (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Fossiliferous Limestone

Calcium Carbonate (CaCO3) with Biogenic Inclusions

Yellow Jasper

Silicon Dioxide (SiO₂)

Petrified Wood

Silicified Wood (primarily SiO2)

Chert (Jasper nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert / Flint

Silicon Dioxide (SiO2)

Gastropod Fossil (Internal Mold)

Phylum Mollusca, Class Gastropoda (Steinkern)

Ironstone Concretion (Ironstone Gourd)

Limonite/Goethite Concretion (FeOO(H))

Pink Opal (Common Opal)

Amorphous Hydrated Silica (SiO2·nH2O)

Chert (Nodule)

Cryptocrystalline Silica (SiO2)

Mookaite Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Coquina

Biogenic Limestone (Calcium Carbonate - CaCO3)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Chert

Chert (microcrystalline quartz, SiO2)

Herkimer Diamond

Quartz (Silica - SiO2)

Ammonite Fossil

Ammonoidea (Calcium carbonate - CaCO3)

Moqui Marble (Shaman Stone)

Iron Oxide Concretion (composed primarily of Quartz sand with Hematite/Goethite shell)

Jasper (Petrified Wood Variety)

Silicon Dioxide (SiO2)

Fossiliferous Limestone (Coquina)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Coquina Limestone (Fossiliferous Limestone)

Calcareous bioclastic sedimentary rock (CaCO3)

Petrified Wood (Silicified Wood)

Silicified Paleoflora (mainly Quartz, SiO2)

Jasper (Brown Iron-Rich Variety)

Silicon Dioxide (SiO2) with Fe2O3 (Iron Oxide/Crystalline Quartz)

Red Jasper

Microcrystalline Quartz (SiO2) with Hematite impurities

Pyrite

Pyrite (Iron sulfide, FeS₂)

Asphalt / Bituminous Aggregate

Bituminous mixture (Hydrocarbon-based sediment)