Granite
Intrusive Igneous Rock
igneous
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Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Rhyolite
Extrusive Felsic Igneous Rock
igneous
Tourmalinated Quartz
Silicon Dioxide with Tourmaline inclusions (SiO2 + Na(Fe3Al6)(Al5Si6O18)(BO33)(OH4))
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Agate
Silicon dioxide (Chalcedony variety)
sedimentary
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Red Breccia Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Mosasaur Tooth
Mosasaurus sp.
fossil
Brecciated Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Poppy Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Granodiorite
Phaneritic Intrusive Igneous Rock
igneous
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
mineral
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Brecciated Jasper
SiO2 (Silicon Dioxide)
sedimentary
Red Jasper
Microcrystalline Quartz (SiO2) with iron oxide impurities
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Vein Quartzite
Metamorphic Quartzite with Quartz Vein (SiO2)
metamorphic
Agate
Silica (Chalcedony), SiO2
sedimentary
Jade Bangle (Jadeite)
Jadeite (NaAlSi2O6)
gemstone
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
White Moonstone
Feldspar (Orthoclase or Albite), (K,Na)AlSi3O8
gemstone
Limonite
FeO(OH)·nH2O
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
White Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)
gemstone
Yellow Jade (Quartzite Jade)
Quartzite (SiO2)
gemstone
Banded Iron Formation
Banded Iron Formation (BIF)
sedimentary
Quartzite Jade (Consolidated Quartzite)
Quartzite (SiO2)
gemstone
Amber
Fossilized Tree Resin (Organic Polymer)
gemstone
Green Jadeite
Jadeite, NaAl(Si2O6)
mineral
Jadeite
NaAlSi2O6
mineral
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary