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Beryl (variety: Aquamarine)

Aquamarine is the sea-blue variety of beryl. Its color depends on the relative amounts of impurities of iron in two different chemical states (Fe+2 and Fe+3). Heating removes the green tones (by converting Fe+2 into Fe+3), resulting in a more pure shade of blue. This 1,000-carat, flawless stone is nicknamed "Most Precious" after a perfume created by its donors, Evyan Perfumes, Inc.

Image Number: 95-40559
Catalog Number: G3889
Weight: 1000 carats
Gift: Evyan Perfumers, Inc. through Dr. W. Langer , 1963
Locality: Minas Gerais , Brazil

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Smithsonian National Museum of Natural History Department of Mineral Sciences website Credits