Marble

Stromatolite (Jasper-replaced)

Fossilized Stromatolite (Cyanobacteria / Cryptozon / Silica SiO2)

Diamond

Diamond (pure Carbon, C)

Grey and White Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Shale

Lutite (primarily composed of clay minerals and iron oxides like hematite, Fe2O3)

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Diamond (Cut Specimen)

Carbon (C)

Diamond

Native Carbon (C)

Chert (specifically Tan/Yellow Chert)

Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)

Chert (Flint Pebbles)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Septarian Nodule (Dragon Stone)

Septarian Concretion (CaCO3 - Calcite, Aragonite, and Limestone/Clay)

Chert (White/Light Tan)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Glaucophane-bearing Schist (Blueschist)

Blueschist (Glaucophane-Lawsonite Schist)

Septarian Nodule (Septaria)

Septarian Nodule (Calcium Carbonate/Aragonite/Calcite Concretion)

Banded Chert (or Banded Jasper)

Silicon Dioxide (SiO2) with Iron Oxide impurities (Hematite/Goethite)

Chert / Flint Conglomerate

Silicified Sedimentary Breccia (primarily SiO2)

Diamond

Diamond (C)

Banded Iron Formation (BIF)

Banded Iron Formation (composed primarily of Hematite [Fe2O3], Magnetite [Fe3O4], and Chert [SiO2])

Carborundum (Silicon Carbide)

Silicon Carbide (SiC) / Moissanite (natural form)

Chert (specifically Tan/Brown Chert)

Chert (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Septarian Nodule (Septarian Dragon Stone)

Septarian concretion (composition: Calcite CaCO3, Aragonite CaCO3, and Limestone/Clay)

Diamond

Carbon (C)

Sandstone (Ferruginous)

Arenite (Fe-bearing Clastic Sedimentary Rock)

Limestone

Calcium Carbonate (CaCO3)

Diamond

Native Carbon (C)

Fossil Coral (Favosites Honeycomb)

Favosites (Genus), Phylum Cnidaria, Class Anthozoa

Gold and Diamond

Native Gold (Au) and Diamond (C)

Septarian Nodule (Dragon Stone) sphere

Septarian concretion (Calcite, Aragonite, and Limestone)

Jasper

Jasper (Silicon Dioxide, SiO2)

Banded Iron Formation (Red Jasper and Hematite Chert)

Banded Iron Formation (BIF); Fe2O3 (Hematite) + SiO2 (Quartz/Jasper)

Sandstone with Secondary Mineral Encrustation

Arenite with Silica/Calcite deposits (SiO2 or CaCO3)

Orange Calcite

Calcium Carbonate (CaCO3)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Septarian Nodule

Septarian Concretion (CaCO3 with Siderite/Calcite/Aragonite)

Diamond (or Diamond Simulant)

Carbon (C)

Diamond (Uncut Crystal)

Carbon (C)

Rough Diamond

Diamond (Pure Carbon: C)

Banded Chert

Microcrystalline Quartz (SiO2)

Banded Chert

Cryptocrystalline Quartz (SiO2)

Diamond (set in Gold)

Diamond (pure carbon, C)

Chert (Grey-Green Var.)

Silicon Dioxide (SiO2)

Chert (Nodule)

Microcrystalline Quartz (SiO2)