The Smithsonian is open today, Monday, January 22.
National Museum of Natural History
10th Street and Constitution Avenue, NW
2nd Floor, East Wing, in the Geology, Gems, and Minerals Hall Floor Plan
On view is the 23.1-carat Carmen Lucia ruby, one of the largest faceted Burmese rubies known to exist. The stone is set in platinum and flanked by 2 triangular colorless diamonds measuring 1.1 and 1.27 carats.