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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Aegirine with orthoclase
Afghanite with calcite
Agate
Ahumada
Attaway Ametrine
Azurite
Basalt
Bastnäsite with quartz
Bismuth
Calcite
Calcite
Calcite
Calcite on galena
Carbo
Corundum (var. ruby)
Corundum (var. sapphire)
Dyber Ametrine
Elbaites
Fire Opal
Fire Opal
Fluorite
Gypsum
Gypsum
Gypsum
Halite
Halite
Hemimorphite
Hemimorphite
Hologem Fire Opal Pendant
Labradorite (var. rainbow moonstone)
Mimetite
Nuevo Mercurio
Opal (var. hyalite)
Opal in matrix
Opals
Orthoclase (var. adularia) with dolomite
Pagination
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