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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Merwinite
Microcline (var. amazonite)
Millerite
Millerite
Millerite with hematite and quartz
Missouri River Sapphires
Montana Sapphires
Moonstone
Moonstone Carving
Nephrite Bowl
Opal
Opal
Opal
Opal bone
Opal replacing wood
Oregon Sunstones
Pearl and Peridot Haircomb
Peridot gemstones
Peridot in Basalt
Prehnite
Pyromorphite
Pyrope
Pyrope (var. rhodolite)
Pyrophyllite
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. amethyst)
Quartz (var. landscape agate)
Quartz (var. smoky quartz) with microcline
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