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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Rhyolite
Rhyolite pumice
Rock Creek Sapphires
Roebling Opal
Rose City
Sandstone
Sandstone
Scapolite
Smithsonite
Smithsonite
Smithsonites
Sokol Emerald Necklace
Southern Charm Pearl Earrings
Sphalerite
Spinel Bracelet
Spinels
Spodumene (var. kunzite)
Spurrite
Stalagmite
Star of Asia
Star quartz
Staunton
Staurolite schist
Success meteorite
Sunstones
Sylvanite
Topaz Gems
Topaz Pendant
Turquoise Zuni Bracelet
Uncle Sam Diamond
Under the Sea Sunstone Carving
Unusual Gems
Unusual Gems
Unusual Gems
Veszelyite
Weston
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