Mineral (Specifically A Variety Of Quartz)

Amygdaloidal Basalt

Amygdaloidal Basalt (extrusive volcanic rock with secondary mineral infilling)

Quartzite

Quartzite (SiO2)

Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony

Chert (Nodule)

Silicon Dioxide (SiO2)

Chert (Flint variety)

Microcrystalline Quartz (SiO2)

Tiger's Eye (Brown/Dark variety)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Chert (Yellow or Brown Jasper)

Microcrystalline Quartz (SiO2)

Blue Zircon

Zirconium Silicate (ZrSiO4)

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

Limonite after Pyrite (Prophecy Stone)

Limonite (FeO(OH)·nH2O) replacing Pyrite (FeS2)

Granitic Pegmatite with Schorl

Granitic Pegmatite (NaAlSi3O8, KAlSi3O8, SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Quartz (Orangey-white variety)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Sandstone (specifically Picture Sandstone or Wonderstone)

Arenite (composed primarily of SiO2)

Amazonite

Potassium Aluminum Silicate (KAlSi3O8)

Jasper

Silicon Dioxide (SiO2) with iron and magnesium inclusions

Glauconitic Sandstone (Greensand)

Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)

Basalt

Basalt (composition of plagioclase feldspar and pyroxene)

Rose Quartz

Silicon Dioxide (SiO2)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Red Jasper (Chert)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Chert (specifically tan/pink variety)

Silicon Dioxide (SiO2)

Sandstone

Quartz Sandstone (predominantly)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Sandstone

Arenite (primarily Quartz, SiO2, with Iron Oxide cementing agent)

Sunstone with Moonstone (Peach Moonstone)

Orthoclase Feldspar (KAlSi3O8)

Banded Calcite (often sold as 'Mexican Onyx')

Calcite (Calcium Carbonate, CaCO3)

Chalcedony

Silicon dioxide (SiO2) - Cryptocrystalline Quartz

Granite

Granite (Felsic Plutonic Rock)

Granodiorite

Granodiorite (Phaneritic intrusive igneous rock containing Plagioclase, Quartz, and Biotite/Amphibole)

Orthoclase Feldspar (Sunstone variety)

KAlSi3O8 (Potassium Aluminum Silicate)

Red Quartzite

Quartzite (primarily SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Iron impurities

Fossil Shark Tooth (Otodus obliquus)

Otodus obliquus; hydroxyapatite (mineralized form Ca5(PO4)3(OH))

Chert (including Flint and Jasper variants)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Quartzose)

Arenite (SiO2 principal)

Agate (Polished Nodule)

Agate (Silicon Dioxide, SiO2)

Clear Quartz (or Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Blue Quartz

Quartz (SiO2) with inclusions

Quartz (possibly milky quartz or quartz with inclusions)

SiO2 (Silicon Dioxide)

Granite

Phaneritic Felsic Igneous Rock (Granite)

Sandstone (Quartzose Sandstone Pebble)

Arenite (primarily SiO2)