Dom Pedro aquamarine

The National Museum of Natural History will permanently display the Dom Pedro Aquamarine, which is the largest single piece of cut-gem aquamarine in the world, beginning Dec. 6. It joins an illustrious cast of famous gemstones already on exhibit in the Janet Annenberg Hooker Hall of Geology, Gems and Minerals such as the Hope Diamond and the Marie Antoinette earrings. Jane M.