Sedimentary Rock (Specifically A Chemical Sedimentary Rock, Or A Chert If Considered Purely Mineral Aggregate)

Bauxite / Iron-rich Laterite

Laterite (principally Al(OH)3, Fe2O3, and SiO2)

Chert (River Siltstone/Flint)

Chert (SiO2)

Jasper / Chert (River Pebble)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert

Microcrystalline Quartz (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Shale with Coprolite influence

Argillaceous sedimentary rock (Shale/Mudstone)

Chert (or Jasper)

Microcrystalline Quartz (SiO2)

Dzi Bead (Etched Chalcedony)

Cryptocrystalline Quartz (SiO2) with chemical etching

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Fossiliferous Limestone (Chertified Limestone)

Calcium Carbonate (CaCO3) often replaced by Microcrystalline Silica (SiO2)

Limestone

Calcareous sedimentary rock (CaCO3)

Chert (varietal Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz (Chert/Chalcedony Variety)

Silicon Dioxide (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Limestone

Calcareous Sedimentary Rock (CaCO3)

Chert (specifically Flint or Novaculite variant)

Chert (Microcrystalline Quartz, SiO2)

Limonitic Sandstone (Stained Sandstone)

Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining

Dolomite or Limestone (Carbonate Rock)

CaMg(CO3)2 (Dolomite) or CaCO3 (Limestone / Calcite)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Dendritic Agate (specifically Orange/Tumbled)

Silicon Dioxide (SiO2) with Oxide Inclusions

Limestone (Grey and White specimens)

Calcium Carbonate (CaCO3)

Chert (and Limestone)

Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3)

Black Veined Jasper (Spiderweb Jasper)

Silicon Dioxide (SiO2)

Chert (Jasper-like)

SiO2 (Cryptocrystalline Quartz)

Granite (specifically Rapakivi Granite)

Phaneritic Felsic Igneous Rock (Granite)

Banded Sandstone

Arenite with Liesegang banding

Chert (varieties include Flint and Jasper)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Chert

Microcrystalline Quartz (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Chert (Chert Nodule with Cortex)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone

Arenite (SiO2 based with various mineral cements)

Bumblebee Jasper

Calcite-Auripigment-Pyrite-Realgar assemblage (Carbonate/Sulphide mixture)

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

Chert Pebble with Inclusion

Microcrystalline Quartz (SiO2)

Red Sandstone (Hematitic)

Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)

Carnelian and White Quartz Bracelet

Silicon Dioxide (SiO2) - specifically Carnelian (Chalcedony) and Rock Crystal/Snow Quartz

Chert (Jasper/River Pebble)

Silicon Dioxide (SiO2)

Chert (Yellow Jasper/Quartzite Pebble)

Microcrystalline Silicon Dioxide (SiO2)

Ironstone (with Limonite/Goethite)

Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O and Hematite Fe2O3)