Mineral (Variant Of Quartz)

Serpentinite

Serpentinite (composed largely of serpentine group minerals including Antigorite, Lizardite, or Chrysotile)

Chert Pebble

Silicon dioxide (SiO2)

Orbicular Jasper (Ocean Jasper variant)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (variant Flint/Jasper)

Microcrystalline Opaline Silica (SiO2)

Chert (Common Opal variant)

Silicon Dioxide (SiO2)

Sandstone (specifically Arkose or Siltstone variant)

Clastic Sedimentary Rock (primarily SiO2)

Chert (specifically Flint or Jasper variant)

Chert (Siliceous rock composed of microcrystalline Quartz, SiO2)

Beryl (likely Aquamarine or Heliodor variant)

Beryllium aluminum cyclosilicate (Be3Al2Si6O18)

Chert (Field-collected Arrowhead-shaped Fragment)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (including Flint and Jasper variants)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (Lithic Sandstone)

Jasper (specifically Red or Brecciated Jasper variant)

Jasper (Microcrystalline Quartz - SiO2)

Desert Rose (Baryte or Selenite variant)

Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 based)

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 dominated)

Sunstone

Oligoclase (a plagioclase feldspar variant), (Na,Ca)(Al,Si)4O8

Quartz River Cobble (Yellow Jasper/Quartzite variant)

Quartzite (primarily Silicon Dioxide, SiO2)

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

Yellow Chalcedony (Agate/Carnelian variant)

Silicon Dioxide (SiO₂)

Sandstone (Green/Yellow Siltstone variant)

Arenite or Siltstone (primarily SiO2 with mineral staining)

Septarian Nodule (Thunder Egg variant)

Septarian concretion (Calcite, Aragonite, and Limestone)

Yellow Chalcedony (common opal or chert variant)

Silicon Dioxide (SiO2)

Jasper with Cinnabar (Dragon Blood Jasper variant)

Silicon Dioxide with Mercury Sulfide (SiO2 + HgS)

Tiger's Eye (likely variant or dark tumble)

Pseudomorph of Quartz after Crocidolite (SiO2)

Chert (Smooth River Siltstone/Basalt variant)

Silicon dioxide (SiO2) / Microcrystalline Quartz

Tiger's Eye (likely Hawk's Eye variant)

Pseudomorph of Quartz after Crocidolite (SiO2)

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)

Jasper (likely Polychrome or Mookaite variants)

Silicon Dioxide (SiO2) with iron oxide and hydroxide inclusions

Banded Iron Formation (Tiger Iron variant)

Banded Iron Formation (SiO2 + Fe2O3)

Chert (Jasper Variant likely)

Silicon Dioxide (SiO2)

Ferruginous Conglomerate

Conglomerate with Iron-Oxide Matrix (SiO2 + Fe2O3/FeO(OH))

Chert (often called Flint for dark variants)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chalcedony (specifically Common Opal or Agate variant)

Silicon Dioxide (SiO2)

Banded Agate (Lake Superior Agate variant)

Silicon Dioxide (SiO2)

Larimar

Pectolite (NaCa2Si3O8(OH))

Chert (specifically Flint or Jasper variant)

Silicon Dioxide (SiO2)

Tumbled Obsidian (possibly Mahogany Obsidian variant)

Volcanic Glass (Amorphous Silicon Dioxide, SiO2)

Banded Agate (Silk Agate or Maligano Jasper variant)

Silicon Dioxide (SiO2)

Fossilized Coral (Petoskey Stone or similar Hexagonaria variant)

Hexagonaria percarinata (Fossilized Coral)

Fancy Jasper (Ocean Jasper or River Jasper variant)

Silicon Dioxide with inclusions (SiO2)

Fluorite with Quartz

Fluorite (CaF2) and Quartz (SiO2)