November 17, 2016 6:55 pm Smithsonian Unveils Largest Diamond Mined in North America The Smithsonian Museum of Natural History has unveiled the largest uncut diamond mined in North America. US & World Videos 0:37 Ex-Abercrombie CEO arrested on sex trafficking-related charges 9:07 Selena Gomez and Benny Blanco's sweetest moments 2:13 Real-life ‘Karate Kid' meets his inspiration 2:12 What to expect in court as Trump faces 2020 election charges in DC