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

Conglomerate

Conglomerate (Sedimentary Clastic Rock)

Sandstone (Weathered Cobble)

Clastic sedimentary rock (primarily SiO2)

Dzi Bead (Agate)

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Halite

Halite (Sodium Chloride, NaCl)

Chert (specifically Iron-stained or Jasperoid Chert)

Microcrystalline Quartz (SiO2)

Chert (Nodular Chert)

Microcrystalline Silica (SiO2)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Banded Chert

Microcrystalline Quartz (SiO2)

Sandstone (likely Quartzose Sandstone)

Arenite (SiO2 based)

Sandstone with Concretions / Liesegang Rings

Arenite with iron oxide banding

Limestone

Limestone (Calcium Carbonate - CaCO3)

Limonite Concretion (Ironstone)

Limonite (FeO(OH)·nH2O) / Goethite

Conglomerate

Conglomerate (clastic sedimentary rock)

Limonite (Iron Ore)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper (specifically Bloodstone/Heliotrope or Dark Green Jasper)

Cryptocrystalline Quartz (SiO2) with inclusions

Mookaite Jasper

Radiolarite (Silica, SiO2)

Chert (and Flint)

Chert (SiO2)

Dyed Agate

Silicon Dioxide (SiO2)

Chert (varieties include Flint or Jasper)

Chert (cryptocrystalline quartz; SiO₂)

Dalmation Stone (Dalmation Jasper)

Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)

Chert

Microcrystalline Quartz (SiO2)

Chert (Quartz Variety)

Silicon Dioxide (SiO2)

Sandstone (specifically Flagstone)

Arenite (primarily composed of SiO2)

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Chert (specifically Tan/Brown Chert)

Chert (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Chert (specifically Yellow/Tan Chert)

Silicon Dioxide (SiO2)

Limestone Fragment

Sedimentary rock (primarily Calcium Carbonate, CaCO3)

Concrete Paver (Artificial Cementitious Rock)

Hydrated Portland Cement Aggregate

Limonitic Iron Ore / Goethite

Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)

Chert (Jasper variety) with Iron Oxide staining

Cryptocrystalline Quartz (SiO2) with Goethite/Limonite impurities

Chert Nodule (Flint)

Chert (Cryptocrystalline Silica - SiO2)

Limestone

Calcium Carbonate (CaCO3)

Chert (Grey-Green Flint)

Microcrystalline silicon dioxide (SiO2)

Chert (specifically Black Chert or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Blue Calcite

Calcium Carbonate (CaCO3)

Chert (specifically Flint or Common Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Pink Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate

Sandstone (specifically Picture Sandstone or Wonderstone)

Arenite (composed primarily of SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Amphibolite (specifically Hornblende Schist/Gneiss)

Amphibole-rich Metamorphic Rock