Sedimentary Rock (Technically A Microcrystalline Quartz Mineral Aggregate)

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock

Tree Agate (Dendritic Agate/Quartz)

Silicon Dioxide (SiO2) with trace Manganese or Iron oxide inclusions

Chert (Holey Stone)

Microcrystalline Quartz (SiO2)

Bauxite

Bauxite (Al2O3·nH2O)

Bumblebee Jasper

Fossiliferous Calcite containing Orpiment and Realgar

Dalmatian Stone

Dalmatian Jasper (Aplitic Perthite)

Dalmatian Stone (often called Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite (formerly believed to be Jasper)

Chert / River Pebble

Silicon Dioxide (SiO2)

Quartz (likely Milky Quartz)

Quartz (SiO₂ - Silicon Dioxide)

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Chert (Smooth River Pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz Vein in Gneiss or Basalt

Milky Quartz (SiO2) within Metamorphic Host Rock

Mookaite Jasper

Silicon Dioxide (SiO2) - Radiolarite

Quartz Crystal (specifically a Double-Terminated variety)

Silicon Dioxide (SiO2) - Low Quartz

Agate with Druzy Quartz

Silicon Dioxide (SiO2)

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

Chert (Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Wishing Stone (Quartz-veined Siltstone or Graywacke)

Hydrothermal Quartz vein in matrix of SiO2 (Quartz) and Al2O3 (Clay minerals)

Kambaba Jasper

Stromatolite (Fossilized Algae within Microcrystalline Quartz)

Bauxite

AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)

Chert (often called Flint)

Chert (Microcrystalline Quartz, SiO2)

Chert

Microcrystalline Quartz (SiO2)

Carnelian Agate

Silicon Dioxide (SiO2)

Lapis Lazuli (Tumbled Specimen)

Lapis Lazuli (Aggregate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

River Pebble Gravel

Hydrothermally modified Clastic Sediment (mainly Quartzite and Chert)

Kambaba Jasper

Stromatolite (Fossilized Algae)

Dalmatian Stone (often misnamed Dalmatian Jasper)

Aplite (with hornblende/arfvedsonite inclusions)

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Chert (Hagstone/Adder Stone)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper variation)

Silicon dioxide (SiO2)

Conglomerate with Quartzite Pebbles

Clastic sedimentary rock (Conglomerate)

Quartz Vein in Pelite (Metamorphic Rock)

Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)

Mookaite Jasper

Silicified Radiolarite (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

White Opal (Common)

Hydrated Silica (SiO2·nH2O)

Ocean Jasper

Silicon Dioxide (SiO2) with various inclusions

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Chert (Siliceous Mudstone variant)

Microcrystalline quartz (SiO2)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz Veined Siltstone or Graywacke

Clastic Sedimentary Rock with Quartz (SiO2) veining

Chert (Nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert Pebble Map

Microcrystalline Quartz (SiO2)