Mineraloid Like Synthetic Material

Chert (often called Flint in this variation)

Silicon dioxide (SiO2) - Microcrystalline quartz

Diorite

Diorite

Sandstone

Quartz Arenite (a type of sandstone composed of more than 90% quartz)

Granite

Phaneritic Intrusive Igneous Rock (primarily composed of SiO2, Al2O3, K2O, Na2O)

Graphite-veined Quartzite

Meta-sedimentary Quartzite with Carbonaceous/Graphitic Inclusions (SiO2 + C)

Chert (varietal Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Serpentinite (often containing Jadeite/Nephrite)

Antigorite-rich Serpentine Rock, (Mg, Fe)3Si2O5(OH)4

Petrified Wood

Silicified Wood (SiO2 - Silicon Dioxide)

Sandstone (Iron-stained)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Jasper Agate (specifically Brecciated Jasper with Agate inclusions)

Silicon Dioxide (SiO2)

Blue Quartz (Dumortierite Quartz)

Quartz (SiO2) with inclusions of Dumortierite (Al7(BO3)(SiO4)3O3)

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone

Arenite (SiO2 based with mineral cement)

Petrified Wood

Silicified wood (Quartz variant, SiO2)

Fossiliferous Limestone

Calcite-rich Sedimentary Rock (CaCO3)

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Turquoise

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

Chrysocolla

Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Chert (Iron-stained)

Chert (SiO2 - Silicon Dioxide)

Blue Tiger's Eye

Riebeckite (crocidolite variety)

Petrified Wood

Silicified Wood (SiO2)

Basalt

Aphanitic Mafic Igneous Rock

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Diorite

Diorite (Intermediate intrusive igneous rock)

Diorite

Intrusive Igneous Rock (Intermediate Composition)

Blue Quartzite

Quartzite with inclusions (SiO2)

Quartz

Quartz (SiO₂)

Jadeite (Jade)

NaAlSi2O6 (Sodium Aluminum Silicate)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Banded Chert

Microcrystalline silicon dioxide (SiO2)

Soapstone (Talc Schist)

Steatite

Shale (with Iron Oxide staining)

Fissile Mudstone (primarily Quartz and Clay minerals)

Red Sandstone

Clastic sedimentary rock (primarily SiO2 with Fe2O3 iron oxide staining)

Chert (variant Flint/Novaculite)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (variously known as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Asphalt (Road Aggregate)

Bituminous Conglomerate / Asphalt Concrete

Chert (variously identified as Flint)

Microcrystalline Quartz (SiO2)

Diorite

Intrusive Igneous Diorite (intermediate composition)

Chert (Yellow Chert/Flint)

Silicon Dioxide (SiO2)

Chert (specifically Flint or Jasper variant)

Cryptocrystalline Quartz (SiO2)