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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Attaway Ametrine
Beryl
Beryl (var. heliodor)
Bismuth
Bununu
Calcite
Corundum (var. sapphire)
Dyber Ametrine
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Fluorites
Limestone with chert
Marble with wollastonite
Millerite
Millerite with hematite and quartz
Nautilus Tourmaline Pendant
Nigerian tourmalines
Opal
Opal
Opal
Opal bone
Opal replacing wood
Paravauxite
Peekskill
Phosphophyllite
Pyromorphite
Quartz (var. amethyst)
Quartz (var. ametrine)
Quartz Gems
Quinn Canyon
Roebling Opal
Sandstone
Schneider Tanzanite Ring
Southwest Sunset
Pagination
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