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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Gypsum
Gypsum
Hematite
Hematite with quartz
Hemimorphite
Hemimorphite
Hologem Fire Opal Pendant
Jeremejevite
Kimberley Diamond
Liddicoatite
Liddicoatite slices
Marquise Diamond Ring
Mimetite
Nuevo Mercurio
Opal (var. hyalite)
Opal in matrix
Opals
Oppenheimer Diamond
Orbicular agate
Orthoclase
Orthoclase (var. adularia) with dolomite
Paradamite with pharmacosiderite
Pearson Diamond
Portuguese Diamond
Purple agate
Pyrite with calcite
Quartz
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz with Fluorite
Rhodochrosite
Ruby and Diamond Brooch
Scorodite
Shepard Diamond
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