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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Ahumada
Attaway Ametrine
Calcite
Calcite
Carbo
Dyber Ametrine
Fire Opal
Fire Opal
Fluorite
Fluorite
Fluorites
Hemimorphite
Hologem Fire Opal Pendant
Nuevo Mercurio
Opal (var. hyalite)
Opals
Phosphophyllite
Quartz (var. ametrine)
Quartz Gems
Southwest Sunset
Tlacotepec
Topaz
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