Mineral (Variant Of Quartz)

Chert / Flint Nodules in Limestone

Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)

Diorite (Dalmatian Stone variant)

Intermediate Phaneritic Igneous Rock

Diorite (Dalmatian Stone variant)

Phaneritic Intermediate Plutonic Rock (Diorite)

Weathered granite or granitic gneiss

Granite, chiefly quartz–feldspar–mica; possible gneissic variant

Botryoidal Chalcedony Geode

Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz

Chrysocolla in Quartz (Quantum Quattro variant)

Hydrated copper silicates (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) often mixed with SiO2

Jasper (Petrified Wood variant)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Amethyst

Silicon dioxide (variant with ferric iron impurities), SiO2

Labradorite

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

Banded Iron Formation (BIF)

Banded Iron Formation

Sandstone

Arenite (Sedimentary rock comprising sand-sized grains)

Chert (River Stone)

Microcrystalline Quartz (SiO2)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Amazonite

Amazonite (Microcline variant: KAlSi3O8)

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Chalcedony (Common Opal variant or Agate pebble)

Silicon dioxide (SiO2)

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Flint (Chert variant)

Microcrystalline Quartz (SiO2)

Chert (and Flint variant)

Microcrystalline Quartz (SiO2)

Granite

Phaneritic Igneous Rock (Granite)

Chert (Jasper/Flint variant)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Bauxite (Iron-stained Chert / Ironstone Aggregate)

Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))

Mica-rich granite or granitic pegmatite

Biotite granite; primarily quartz, feldspar, and biotite mica

Chert (Nodule)

Silicon Dioxide (SiO2)

Agate (Turtle Carving)

Agate (Cryptocrystalline variety of Silica, SiO2)

Biological Bone (Patella/Knee)

Patella (part of the Human Skeletal System)

Banded Chert / Sandstone Pebble

Microcrystalline Quartz (SiO2) / Silicified Sandstone

Chert (Common Opal variant)

Microcrystalline Quartz (SiO2)

Yellow Chert

Microcrystalline Quartz (SiO2)

Chert (Jasper/Flint variant)

Microcrystalline Quartz (SiO2)

Chalcedony (Common Opal variant or Chert/Flint)

Silicon Dioxide (SiO2)

Quartz (Iron-stained or Rose variant)

Silicon Dioxide (SiO2)

Banded Agate (Onyx variant)

Silicon dioxide (SiO2)

Chert

Microcrystalline Quartz (SiO2)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Clear Quartz (Herkimer Diamond variant)

Silicon Dioxide (SiO2)

Chert (Jasper/Chalcedony variant)

Microcrystalline Quartz (SiO2)

Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO2)

Chert Pebble (Jasper variety)

Microcrystalline Quartz (SiO2)

Flint (Chert variant)

Silica (SiO2) - Microcrystalline Quartz

Chert (variant Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert Pebble (Jasper/Flint variant)

Microcrystalline Quartz (SiO2)