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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Peridotite xenolith
Peridotite xenolith in basalt
Peridotite xenoliths in basalt
Phosgenite
Pitts
Plainview
Plantersville
Post Diamond Tiara
Prehnite
Pyritic slate
Pyromorphite
Pyrope Hair Comb
Pyrophyllite
Pyroxmangite
Quartz
Quartz
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst geode)
Quartz (var. amethyst geode)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz (var. citrine)
Quartz (var. landscape agate)
Quartz (var. rose)
Quartz (var. smoky quartz) with microcline
Quartz (var. smoky-citrine)
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