Sedimentary Or Metamorphic (Base Substrate)

Chert (River Cobble)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Blue Kyanite

Kyanite (Al2SiO5)

Chert

Chert (Silicon Dioxide, SiO2)

Sandstone

Arenite (Siliclastic sedimentary rock, primarily SiO2)

Dalmatian Jasper (Dalmatian Stone)

Dalmatian Stone (primarily Feldspar, Quartz, and Arfvedsonite/Tourmaline)

Garnet Schist

Almandine-Mica Schist

Sandstone (Iron-stained)

Clastic sedimentary rock (SiO2 with Fe2O3 staining)

Ironstone (Limonitic Shale)

Ferruginous Siltstone / Goethite-rich Sedimentary Rock

Sandstone

Arenite (primarily Quartz, SiO2)

Ocherous Sandstone (Ferruginous Sandstone)

Ferruginous Arenite (SiO2 with Fe2O3)

Gneiss

Gneiss (Metamorphic rock)

Chert (and Limestone)

Silicon Dioxide (SiO2)

Quartz (likely a form of massive or vein quartz)

Quartz (SiO₂)

Geode with Iron-Stained Quartz/Calcite

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide - SiO2)

Fossilized Favosites (Honeycomb Coral)

Favosites (extinct genus of tabulate coral)

Red Sandstone

Arenite

Pink Rhodonite

Manganese Silicate (MnSiO3)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite or Iron Oxide inclusions

Dendritic Jasper (Bumblebee like Agate)

Silicon Dioxide with inclusions (SiO2)

Zebra Jasper

Tumbled Opaque Chalcedony (SiO2)

Fossiliferous Limestone (Coquina-like)

Biogenic Limestone

Fossilized Coral (Petoskey Stone or similar)

Hexagonaria percarinata (Fossilized Rugose Coral)

Conglomerate

Clastic Conglomerate (Lithic-rich)

Sandstone

Arenite (primarily SiO2)

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Limestone

Calcium Carbonate (CaCO3)

Glauconite (Green Sandstone)

Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2

Red Sandstone

Arenite (predominantly Quartz with Hematite cementation)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Gold Nugget

Native Gold (Au)

Gneiss

Foliated Metamorphic Rock

Limestone

Calcium Carbonate (CaCO3)

Grey River Pebble (Likely Quartz-rich or Limestone)

Clastic Sedimentary Rock (typically SiO2 or CaCO3 based)

Red Granite

Phaneritic Felsic Igneous Rock (Granite)

Chert (also known as Flint or Common Chalcedony)

Cryptocrystalline Silica (SiO2)

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

Limonite

Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O

Chert (Jasper variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Fossiliferous Limestone (containing Brachiopods)

Biogenic Limestone (Calcium Carbonate, CaCO3)

African Turquoise

Teal Jasper (Macro-crystalline Quartz/Sio2 + Inclusions of Copper, Iron, and Manganese)