Sedimentary (If Natural Jasper) Or Artificial (If Slag)

Banded Iron Formation

Banded Iron Formation (BIF)

Yellow Quartz Pebble (Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Turquoise in Matrix

Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)

Turquoise

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

Banded Sandstone (Zebra Stone)

Arenite with Iron Oxide Banding (Liesegang rings)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz

Red Jasper (Skull Carving)

Jasper (Silicon Dioxide, SiO2 plus Iron Oxide inclusions)

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Jasper with Manganese Dendrites

Silicon Dioxide (SiO2) with Oxide Mineral Inclusions

Banded Chert or Agate

Silicon Dioxide (SiO2)

Jasper (Red/Brown)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Nodule)

Silicon Dioxide (SiO2)

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Picture Jasper (specifically Biggs or Deschutes variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Jasper with Iron Staining

Silicon Dioxide (SiO2) with Hematite impurities

Jasper (Mookaite variety likely)

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper (Iron-rich Chert)

Silicon Dioxide (SiO2) with iron oxide impurities

Chert (with Manganese Dendrites)

Chert (Cryptocrystalline Quartz, SiO2)

Chert (specifically Tan Chert)

Chert (SiO2)

Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Zebra Jasper (Zebra Stone)

Tumbled Silicon Dioxide (SiO2) with impurities

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Jasper (Opaque Chalcedony)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Red Jasper (Siltstone/Quartz variety)

Silicon Dioxide (SiO2) with Hematite impurities

Jasper (Iron-stained Quartz)

Silicon dioxide (SiO2) with iron oxide inclusions

Chert (Polished Gemstone / River Stone)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Green Jasperiod)

Chert (Microcrystalline Quartz, SiO2)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Jasper (specifically Chert/Ironstone)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Yellow Jasper (Chert variant)

Silicon Dioxide (SiO2) with iron inclusions

Red Jasper (Chert)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Conglomerate

Clastic sedimentary rock (Puddingstone)

River Stone (likely Basalt or Chert)

Silicon Dioxide (SiO2) for chert or Mafic Extrusive Rock for basalt

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Ferruginous Quartzite (Chert)

Quartzite with Iron inclusions (SiO2 + Fe2O3)

Coral Rock (Coquina)

Biogenic Limestone (Calcium Carbonate - CaCO3)

River Stone (likely Mudstone or Siltstone)

Lutite (Clastic sedimentary rock composed of clay and silt-sized particles)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

Jasper-Agate Conglomerate (Potentially Puddingstone)

Jasper-cemented Silicate Aggregate (SiO2)