Mineral (Variant Of Quartz)

Agate

Silicon Dioxide (SiO2) - Chalcedony variant

Desert Rose

Gypsum (CaSO4·2H2O) or Barite (BaSO4) inclusions in sand

Granite (Micro-specimen)

Plutonic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Granite

Granite (Felsic Plutonic Rock)

Sandstone

Arenite (Sedimentary rock comprising sand-sized grains)

Quartz (Smoky/Milky variant)

Silicon Dioxide (SiO2)

Chert / Flint Nodules in Limestone

Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)

Corundum (Sapphire variant)

Aluminium oxide (Al2O3)

Chrysocolla

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

Chalcedony (Common Opal variant or Quartz)

Silicon Dioxide (SiO2)

Agate and Amethyst (Quartz variants)

Silicon Dioxide (SiO2) - Microcrystalline Quartz and Crystalline Quartz

Chert (or possibly Flint)

Chert (variant: Flint)

Tiger's Eye (variations include Blue or Hawk's Eye)

Silicon Dioxide with Crocidolite inclusions (SiO2)

Quartz (Milky/Common variant)

Silicon Dioxide (SiO2)

Botryoidal Chalcedony Geode

Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz

Chert (Common Opal variant)

Microcrystalline Quartz (SiO2)

Chert Pebble (Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (Arrowhead or Projectile Point)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Pegmatite (White Granite variant)

Pegmatitic Granite (Quartz and Feldspar rich)

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Granite

Phaneritic Igneous Rock (Granite)

Green Banded Chert (Agate/Jasper)

Silicon Dioxide (SiO2) with trace impurities of Chlorite or Glauconite

Pink Quartz (Rose Quartz variant)

Silicon Dioxide (SiO2)

Sandstone (likely Siltstone variety)

Arenite / Siltstone (primary mineral SiO2)

Chert (Brown Variety)

Microcrystalline quartz (SiO2)

Quartz (Smoky/Grey Quartz Variant)

Silicon Dioxide (SiO2)

Quartz (Clear Quartz and Rose Quartz variants)

Silicon Dioxide (SiO2)

Chert (variant Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (and Flint variant)

Chert (SiO2)

Chert (Red Jasper variant)

Microcrystalline Quartz (SiO2)

Dragon Blood Jasper

Epidote with Red Piedmontite (Chalcedony/Quartz variant)

Chert (Flint)

Silicon Dioxide (SiO2)

Chrysocolla in Quartz (Quantum Quattro variant)

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

Amethyst

Silicon dioxide (variant with ferric iron impurities), SiO2

Chalcedony (Common Opal variant or Chert/Flint)

Silicon Dioxide (SiO2)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Quartzite

Quartzite (primarily SiO2)

Jasper (Petrified Wood variant)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Orthoclase Feldspar

Orthoclase (KAlSi₃O₈)

Flesh-colored Quartzite

Quartzite (SiO2)

Chert (concretionary/nodular variant)

Microcrystalline Quartz (SiO2) with possible fossil or mineral inclusions

Carnelian

Carnelian (SiO2 variant)