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

Chert (Flint variety)

Chert (SiO2)

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Bloodstone (Heliotrope)

Silicon dioxide (SiO2) with iron oxide inclusions

Chert (often called Jasper in this color variety)

Microcrystalline Quartz (SiO2)

Chert / Flint

Cryptocrystalline Quartz (SiO2)

Chert / Jasper

Sedimentary Cryptocrystalline Quartz (SiO2)

Chert (variously Flint or Jasper gravel)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert Nodule (Commonly known as a Flint or River Cobble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (variously identified as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Nodular Chert)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Fancy Jasper (Ocean Jasper or River Jasper variant)

Silicon Dioxide with inclusions (SiO2)

Chert (Brown variety)

Silicon Dioxide (SiO2)

Chert (Green variety)

Chert (Silicon Dioxide, SiO2)

Blue Topaz (facetted in jewelry)

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Chalcedony (Grey/White Agate)

Silicon Dioxide (SiO₂)

Dendritic Agate

Silicon Dioxide with Manganese/Iron oxide inclusions (SiO2)

Chalcedony (Blue/Grey Lace Agate)

Silicon Dioxide (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Chert (White/Gray variety)

Chert (SiO2)

Pink Granite (with Potassic Feldspar and Quartz)

Felsic Intrusive Igneous Rock (Granite)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Quartz (Variety of Rough Mineral Specimens)

Silicon Dioxide (SiO2)

Chert (Yellow/Tan variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Jasper

Jasper (Silicate mineral, SiO2)

Chert (Chert Nodule with Cortex)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

White Topaz

Aluminum Silicate Fluoride Hydroxide; Al2SiO4(F,OH)2

Strawberry Quartz

Silicon Dioxide (SiO2) with inclusions of Goethite or Hematite

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Chert (Golden/Yellow Variety)

Microcrystalline Silica (SiO2)

Chert (Cherty Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide impurities

Chert (often called Flint)

Microcrystalline Quartz (SiO2)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Granite

Phaneritic plutonic rock (approx. 20-60% quartz, 35-90% feldspar)

Rutilated Quartz

SiO2 with TiO2 inclusions (Quartz with Rutile)

Blue Lace Agate

Chalcedony (SiO2) with trace inclusions

Rutilated Quartz

Quartz (SiO2) with Rutile inclusions (TiO2)

Chalcedony (Botryoidal or Geode form)

Silicon Dioxide (SiO2)

Chert (Field-collected variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Peridot (likely, based on color and appearance)

Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)