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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Opal replacing wood
Paragould
Peekskill
Peridot in Basalt
Pitts
Plainview
Plantersville
Prehnite
Pyromorphite
Pyrophyllite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. landscape agate)
Quartz (var. smoky quartz) with microcline
Quinn Canyon
Rhodochrosite
Rhodochrosite
Rock Creek Sapphires
Roebling Opal
Rose City
Smithsonite
Smithsonite
Sphalerite
Spurrite
Staunton
Success meteorite
Veszelyite
Weston
Willamette
Wulfenite
Wulfenite
Pagination
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