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Smithsonian National Museum of Natural History
GeoGallery
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Quartz (var. smoky quartz)
Quartz (var. smoky quartz) with microcline
Quartz (var. smoky-citrine)
Quartz (var. smoky-citrine)
Quartz Gems
Quartz Gems (var. citrine)
Quartz on siderite
Quartz Pendant
Quartz with Chamosite
Quartz with Clinochlore
Quartz with dumortierite
Quartz with Fluorite
Quartz with sphalerite inclusions
Quinn Canyon
Rhodochrosite
Rhodochrosite
Rhodochrosite
Rhodochrosite with arsenopyrite
Rhodochrosite with quartz
Rhodonite
Rhodonite
Rhyolite
Rhyolite pumice
Rock Creek Sapphires
Rock Crystal Quartz Egg
Roebling Opal
Rose City
Rose quartz sphere
Rosser Reeves Star Ruby
Royal Butterfly Brooch
Ruby and Diamond Brooch
Russian beryls
Russian chrysoberyls
Rutile
Sandstone
Sandstone
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