Sedimentary (Secondary Classification: Cryptocrystalline Quartz)

Chert (Nodular Flint)

Microcrystalline Quartz (SiO2)

Chert (often called Flint or River Stone)

Microcrystalline Quartz (SiO2)

Chert / Flint (with Crinoid Stem Molds)

Microcrystalline Quartz (SiO2)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (Iron-stained variant)

Microcrystalline Quartz (SiO2)

Banded Chert

Microcrystalline Quartz (SiO2)

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Chert (Chalcedony/Jasper)

Microcrystalline Quartz (SiO2)

Wishing Stone (Basalt/Greywacke with Quartz Vein)

Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion

Jasper

Silicon dioxide (SiO2)

Chert (Jasper/Agate variety)

Microcrystalline Quartz (SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

Quartz

Silicon dioxide (SiO2)

Chert Nodule

Microcrystalline Quartz (SiO2)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

Chert (Chert Nodule in Limestone)

Microcrystalline Quartz (SiO2)

Turquoise

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

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (specifically Flint or Jasper variant)

Microcrystalline quartz (SiO2)

Yellow Chert or Jasper

Microcrystalline Quartz (SiO2)

Banded Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Chert (Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (containing Iron Oxide spots)

Microcrystalline Quartz (SiO2)

Chert (Nodule / Geode fragment)

Microcrystalline Quartz (SiO2)

Chert (specifically Chalcedony or Flint variation)

Microcrystalline Quartz (SiO2)

Chert (Jasper/Carnelian variety)

Microcrystalline Quartz (SiO2)

Chert (specifically a fragment with Desert Varnish)

Microcrystalline quartz (SiO2)

Banded Chert

Microcrystalline Quartz (SiO2)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (Flint) with Glauconite

Microcrystalline Quartz (SiO2)

Chert (and Flint)

Microcrystalline Quartz (SiO2)

Chert (containing Fossil Inclusions)

Microcrystalline Quartz (SiO2)

Red Jasper (Siltstone/Quartz variety)

Silicon Dioxide (SiO2) with Hematite impurities

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Chrysocolla (with Quartz and Azurite)

Hydrated copper phyllosilicate mineral [Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)]

Gold Nugget

Native Gold (Au)