Fossilized Tooth
Vertebrate Fossilized Tooth (Mineralized Biogenic Material)
fossil
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Flint
SiO2 (Cryptocrystalline Quartz)
sedimentary
Fossil-bearing Sedimentary Rock
Sedimentum cum fossili
fossil
Sandstone
Clastic sedimentary rock (quartz arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Dinosaur Claw Fossil
Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)
fossil
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Blue Lace Agate
Silicon Dioxide (Chalcedony variety), SiO2
gemstone
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Sandstone
Quartzose Sandstone / Lithic Sandstone
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Granite
Intrusive Igneous Rock
igneous
Agate
Silicon Dioxide (SiO2), microcrystalline variety of quartz
sedimentary
Granite
Intrusive igneous rock
igneous
Granite
Intrusive Igneous Rock
igneous
Agate and Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Granite
Intrusive Igneous Rock
igneous
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Granite
Felsic intrusive igneous rock
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Carnelian
Chalcedony (SiO2)
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Corundum (Sapphire in Matrix)
Aluminum Oxide (Al2O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Conglomerate
Sedimentary Conglomerate
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Scoria (Volcanic Cinder)
Extrusive Igneous Rock
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary