The world’s largest cut aquamarine gem is on display in its new home at the Smithsonian’s National Museum of Natural History. The obelisk-shaped Dom Pedro gem, mined in Brazil in the late 1980s, is named for Brazil’s first two emperors. The gem was designed and cut by gem artist Bernd Munsteiner. It stands 14 inches tall and weighs 10,363 carats — nearly 5 pounds. It joins the Hope Diamond and Marie Antoinette earrings on display.