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Smithsonian National Museum of Natural History
GeoGallery
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Pyritic slate
Pyromorphite
Pyrope
Pyrope (var. rhodolite)
Pyrophyllite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. landscape agate)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Quartz Pendant
Quinn Canyon
Rhodochrosite
Rhyolite
Rhyolite pumice
Rock Creek Sapphires
Roebling Opal
Rose City
Rosser Reeves Star Ruby
Rutile
Sandstone
Sandstone
Smithsonite
Smithsonite
Smithsonites
Southern Charm Pearl Earrings
Sphalerite
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