Metamorphic (Localized) Or Sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony - SiO2)

Red Jasper (Skull Carving)

Jasper, a cryptocrystalline variety of Quartz (SiO2)

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Dendritic Agate

Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)

Banded Agate (Yellow/Honey Agate)

Agate (Cryptocrystalline Quartz, SiO2)

Quartz Druzy Geode Fragment

Silicon Dioxide (SiO2)

Agate (specifically a Yellow/Honey Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Jasper with Quartz Druzy

Silicon Dioxide (SiO2)

Jasper

Jasper (Silicate mineral, SiO2)

Chalcedony (Botryoidal)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Tree Agate

Dendritic Chalcedony (SiO2)

Jasper

Silicon dioxide (SiO2)

Jasper (Red Jasper)

Silicon Dioxide (SiO₂)

Chalcedony (Smoky Quartz or Agate nodule fragment)

Silicon Dioxide (SiO2)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Titanium-Coated Hematite (Aura Hematite)

Titanium-bonded Hematite (Fe2O3 with a Ti coating)

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Jasper or Agate-bearing Chert

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Chalcedony Geode Fragment

Microcrystalline Quartz (SiO2)

Citrine Geode

Citrine (Silicon Dioxide, SiO2)

Zebra Jasper

Silicon Dioxide (SiO2) with impurities

Yellow Jasper

Silicon Dioxide with Hydrous Iron Oxide (SiO2 + FeO(OH))

Quartz Geode

Silicon Dioxide (SiO2)

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)

Quartz Geode (Druzy Quartz)

Silicon Dioxide (SiO2)

Botryoidal Chalcedony (Agate/Desert Rose Chalcedony)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide with Iron inclusions (SiO2 + Fe2O3)

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Red Jasper (Banded Jasper)

Jasper (Silicon Dioxide, SiO2)

Agate (Carnelian-Blue Agate mix)

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2)

Jasper (Green Jasper / Bloodstone variant base)

Silicon Dioxide (SiO2) with impurities of chlorite and iron oxides

Jasper with Agate and Quartz Inclusions

Silicon Dioxide (SiO2) - Chalcedony / Quartz aggregate

Tree Agate

Silicon Dioxide (SiO2) - Dendritic Agate/Chalcedony

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions

Chalcedony (Agate Nodules)

Silicon Dioxide (SiO2)

Jasper (Iron-stained Quartz)

Silicon dioxide (SiO2) with iron oxide inclusions

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Iron inclusions