Mineral (Specifically A Variety Of Quartz)

Jasper (likely Kambaba or Crocodile Jasper variety)

Silicon Dioxide (SiO2) with inclusions

Sunstone with Black Tourmaline (Arfvedsonite)

Feldspar (Na,Ca)(Al,Si)4O8 with Schorl Na(Fe3+)3Al6(Si6O18)(BO3)3(OH)3(OH)

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite mica)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2) with Limonite/Goethite

Amazonite

Amazonite (KAlSi3O8, a variety of Microcline)

Smoky Quartz (with inclusions)

Silicon Dioxide (SiO2)

Smoky Quartz

Silicon Dioxide (SiO2) with aluminum impurities

Chert (specifically Jasper/Carnelian variety)

Microcrystalline quartz (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Moss Agate

Silicon Dioxide (SiO2) with inclusions

Aventurine (likely Green Aventurine)

Quartz (SiO2) with included minerals (Fuchsite or Chlorite for green color)

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Yellow Jasper

Jasper, a microcrystalline variety of Quartz (SiO2) with iron inclusions

Milky Quartz Pebble (Tumbled Quartzite)

Silicon Dioxide (SiO2)

Milky Quartz Geode or Druzy Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Chert (often called Flint or Chalcedony Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Tourmalinated Quartz

Silicon Dioxide (SiO2) with Schorl inclusions (NaFe2+3Al6(BO3)3Si6O18(OH)4)

Smoky Quartz (with complementary stones in jewelry setting)

Smoky Quartz (Silicon Dioxide - SiO2)

Chert (Flint Nodules)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz (Clear / Rock Crystal)

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Carnelian

Cryptocrystalline Quartz (SiO2)

Druzy Agate (specifically Black Druzy Agate)

Silicon Dioxide (SiO2)

Quartz (likely Herkimer Diamond style)

Silicon Dioxide (SiO2)

Dalmatian Stone

Dalmatian Jasper (Aplitic Rock)

Buffalo Nickel (Indian Head Nickel)

Cupronickel (75% Copper, 25% Nickel)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz

Citrine (Silicon Dioxide, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Jasper (likely Polychrome or Desert Jasper)

Silicon Dioxide (SiO2) with impurities

Agate (or Banded Agate)

Agate (a variety of Chalcedony, which is a cryptocrystalline form of Quartz); Chemical Formula: SiO₂ (Silicon Dioxide)

Carnelian

Carnelian (a variety of Chalcedony) - SiO2

Milky Quartz

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Carnelian (a variety of Chalcedony)

Silicon Dioxide (SiO2) with iron oxide impurities

Ferruginous Quartz

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

Banded Agate

Cryptocrystalline Quartz (SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)

Quartz Veined Rock (Likely Graywacke or Quartzite)

Silicon Dioxide (SiO2) veins in Metasedimentary matrix

Blue John Fluorite

Fluorite (Calcium Fluoride), CaF2