Marble

Oolite or Oolitic Limestone

Oolitic Limestone (Principal mineral: Calcite, CaCO3)

Green Sandstone

Glauconitic Sandstone

Ferruginous Sandstone (Ironstone)

Ferruginous Sandstone / Limonite-cemented Quartz Sandstone

Ammonite Fossil (Polished Section)

Ammonoidea (typically mineralized with Calcite CaCO3)

Green Calcite

Calcium Carbonate (CaCO3)

Chert (Flint/Jasper variety)

Microcrystalline Quartz (SiO2)

Diamond (or Diamond Simulant like Cubic Zirconia)

Carbon (C) - if Diamond; Zirconium dioxide (ZrO2) - if Cubic Zirconia

Fossilized Crinoid Stem

Class Crinoidea (Echinodermata)

Banded Sandstone (Differential Weathering)

Clastic Sedimentary Rock (primarily SiO2)

Coquina Limestone (Fossiliferous Limestone)

Calcareous bioclastic sedimentary rock (CaCO3)

Chert Pebble (Jasper variant)

Microcrystalline Quartz (SiO2)

Mookaite Jasper

Silicified Porcellanite (SiO2 with impurities)

Sandstone (Ferruginous)

Arenite (Fe-rich)

Diamond

C (Carbon)

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Diamond (Cluster Setting)

Carbon (C) - Diamond

White Quartz Pebble

Silicon Dioxide (SiO2)

Chert (specifically Gray/Tan Bedded Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ironstone (likely Ferruginous Siltstone/Sandstone)

Ferruginous sedimentary rock (FeOx-rich clastic)

Limestone

Calcium Carbonate (CaCO3)

Jasper (Iron-rich Chert)

Silicon Dioxide (SiO2) with impurities of Hematite or Goethite

Ferruginous Sandstone (Iron-rich Sandstone)

Ferruginous Arenite

Limestone

Calcium Carbonate (CaCO3)

Yellow Chert (Jasper)

Microcrystalline Quartz (SiO2)

Honey Calcite (Yellow Calcite)

Calcium Carbonate (CaCO3)

Chert (Chalk-associated Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Limestone (specifically Fossiliferous or Crinoidal Limestone)

Calcium Carbonate (CaCO3) - Calcite Rock

Red Sandstone

Arenite (Ferruginous Sandstone)

Limestone

Calcium Carbonate (CaCO3)

Septarian Nodule

Septarian Concretion (Calcium Carbonate/Aragonite/Calcite)

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2)

Basalt with Garnet inclusions

Basalt containing Nesosilicate (Garnet Group, likely Almandine Fe3Al2Si3O12)

Basalt (River or Beach Pebble)

Basalt (Mafic Extrusive Igneous Rock)

Limestone (Weathered)

Calcium Carbonate (CaCO3)

Ironstone Concretion / Goethite Nodules

Ironstone (composed primarily of Goethite FeO(OH) and Limonite)

Coquina / Fossiliferous Limestone

Coquina (composed primarily of Calcium Carbonate / CaCO3)

Pink Chert (Brecciated Jasmine/Jasper)

Silicon Dioxide (SiO2)

Siltstone

Siltstone

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)