Mineral (Or Mineraloid If Microcrystalline)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay impurities

Sandstone Concretion

Moqui Marble (Iron-oxide concretion)

Aventurine (specifically Green Aventurine)

Silicon Dioxide (Quartz) with inclusions of Fuchsite; SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Petrified Wood

Silicified wood (primarily Quartz/Chalcedony, SiO2)

Ironstone concretion / Limonitic Sandstone

Goethite/Hematite Cemented Sandstone (Hydrated Iron Oxide)

Yellow Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2

Ironstone Concretion / Limonite Node

Goethite and Limonite (FeO(OH) nH2O)

Chert (specifically Jasper/Flint pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Jasper

Jasper (Silica-rich Microcrystalline Quartz, SiO2)

Quartzite Pebble (with Iron Inclusions)

Quartzite (primarily SiO2 with Fe2O3/FeOOH impurities)

Chert (Flint)

Silicon Dioxide (SiO2)

Weathered Quartzite or Chert Pebble

Silicon Dioxide (SiO2)

Petrified Wood

Silicified wood (Quartz/Chalcedony - SiO2)

Dyed Agate

Silicon Dioxide (SiO2) - Variety Agate / Chalcedony

Bloodstone (also known as Heliotrope)

Silicon Dioxide (SiO2) - variety of Chalcedony

Green Moss Agate

Agate (Silicon Dioxide - SiO2) with inclusions of hornblende or chlorite

Dendritic Agate

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

Red Jasper (River pebble)

Jasper (Silicon Dioxide, SiO2 plus iron oxide impurities)

White Agate (Chalcedony)

Agate (Silicon Dioxide - SiO2)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2

Blue Chalcedony (Blue Lace Agate variety)

Silicon Dioxide (SiO₂)

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities), formula: SiO2

Carnelian Agate

Chalcedony (Silicon Dioxide, SiO2)

Agate (specifically a Blue Agate Geode Slice)

Chalcedony (cryptocrystalline variety of Quartz); SiO2

Amber Agate / Carnelian

Chalcedony (Silicon Dioxide, SiO2)

Tree Agate (Dendritic Agate/Quartz)

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

Banded Carnelian Agate

Var. of Chalcedony (SiO2)

Moss Agate

Silicon Dioxide (SiO2) with inclusions

Red Jasper

Jasper (Silicon Dioxide with iron oxide inclusions), SiO2

Agate (Moss or Dendritic Agate)

Chalcedony (Silicon Dioxide, SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper (Iron Oxide Rich)

Silicon Dioxide (SiO2) with Fe2O3 (Hematite/Goethite) inclusions

Serpentine Jade (New Jade/Olive Jade)

Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite

Chert (Flint variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (often called Flint or Jasper based on color)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Wishing Stone (Quartz-veined Siltstone or Graywacke)

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

Ironstone Concretion (Ironstone Gourd)

Limonite/Goethite Concretion (FeOO(H))

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Basalt

Basalt (Mafic volcanic rock)

Yellow Jasper

Silicon Dioxide (SiO2)

Jasper

Jasper (Silica/Silicon Dioxide, SiO2)