Lucara's 100 percent owned Karowe diamond Mine, located in Botswana, has been in production since 2012 and is one of worlds' foremost producers of large, Type IIA diamonds in excess of 10.8 carats, including the 1,109-carat Lesedi La Rona, the biggest gem found in more than a century that was sold for $53 million in 2017. Bloomberg's Alix Steel takes a closer look at the company as its CEO Eira Thomas talks with Bloomberg's Danielle Bochove about diamonds, blockchain technology and boardroom diversity. (Source: Bloomberg)