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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
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
Sapphire Bracelet
Scapolite
Scapolite
Scapolite
Scheelite
Schneider Tanzanite Ring
Scorodite
Shepard Diamond
Shergotty
Sherman Diamond
Siderite
Sikhote-Alin
Silver
Silver
Sinuous Gypsum
Smithsonite
Smithsonite
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