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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
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)
Quartz (var. smoky-citrine)
Quartz Gems
Quartz Gems (var. citrine)
Quartz Pendant
Quartz with Chamosite
Quartz with Clinochlore
Quartz with sphalerite inclusions
Quinn Canyon
Rhodochrosite
Rhodonite
Rhyolite
Rhyolite pumice
Rock Creek Sapphires
Rock Crystal Quartz Egg
Roebling Opal
Rose City
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