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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Beryl ( var. trapiche emerald)
Chalk Emerald
Conchita Montana Sapphire Butterfly
Corundum (var. sapphire)
Emerald Carving
Fluorites
Gachala Emerald
Hemimorphite
Hooker Emerald
Johnstown
Kyanite schist
Mackay Emerald Necklace
Manganoan calcite
Maximilian Emerald
Microcline
Microcline (var. amazonite)
Migmatite
Missouri River Sapphires
Mogul Emerald Necklace
Montana Sapphires
Nakhla
Parisite with calcite
Peridot gemstones
Post Emerald Necklace
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Rock Creek Sapphires
Sokol Emerald Necklace
Veszelyite
Zircon (var. cyrtolite)
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