Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)

Carnelian (Flame Polished)

Carnelian (SiO2 with Iron Oxide impurities)

Chevron Amethyst

Silicon Dioxide (SiO2) with trace Iron (Fe3+)

Rose Quartz

Silicon Dioxide with trace inclusions (SiO2)

Chert (specifically a Worked Flint/Knapped Flake)

Chert / Flint (Microcrystalline Quartz, SiO2)

Lemon Quartz (Orizaba/Citrinated Quartz)

Silicon Dioxide (SiO2) with iron impurities/treatment

Amethyst (Chevron Amethyst/Dream Amethyst)

Silicon Dioxide (SiO2) with trace Iron impurities

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Yellow Aventurine

Quartz containing Muscovite or Mica inclusions (SiO2)

Blue Moss Agate / Blue Chalcedony

Silicon Dioxide (SiO2)

Banded Agate (Pink Chalcedony)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Limestone (specifically Iron-stained or Argillaceous Limestone)

Calcium Carbonate (CaCO3) with Iron Oxide (Fe2O3) impurities

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (Nodular Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Carnelian (Red Agate/Chalcedony)

Cryptocrystalline Quartz (SiO2) with Hematite impurities

Green Quartzite (Aventurine variety)

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Citrine

Silicon dioxide (SiO2)

Mookaite Jasper

Radiolarite (SiO2 with impurities)

Jasper with Quartz inclusions

Silicon Dioxide (SiO2) - Microcrystalline Chalcedony

Granite (Pink/Potassium Feldspar Granite)

Felsic Plutonic Rock (Potassium Feldspar, Quartz, Mica, and Amphibole)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Chert (Chalcedony/Jasper)

Microcrystalline Quartz (SiO2)

Chert (with Quartz/Chalcedony)

Microcrystalline Quartz (SiO2)

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

Jasper

Silicon Dioxide (SiO2)

Carnelian Agate (with Quartz/Chalcedony)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Nodular Chert)

Microcrystalline Silica (SiO2)

Petrified Wood

Silicified Wood (SiO2 - Quartz/Chalcendony replacing organic matter)

Chert (vuggy variety)

Microcrystalline silica (SiO2)

Chert (specifically Flint or Jasper variant)

Microcrystalline silica (SiO2)

Orange Calcite Sphere

Calcium Carbonate (CaCO3)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz Geode/Druzy Quartz

Quartz (SiO₂)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Blue Sapphire

Corundum (Al2O3)

Milky Quartz

Milky Quartz (Silicon Dioxide, SiO2)

Quartzite with Iron Inclusions

Quartzite (largely SiO2) with Hematite/Limonite staining (Fe2O3)

Chert (specifically Yellow Jasper/Flint)

Microcrystalline Quartz (SiO2)

Chert (specifically Red Chert/Jasper)

Microcrystalline Quartz (SiO2)

Charoite

Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)