In 2013, Botswana’s Orapa mine was the worlds largest diamond mine in terms of total value of carats produced. In 2014 Orapa is again estimated to be the worlds largest by value estimated to produce $1.9 billion worth of diamonds. In 2014, the Orapa mine is also estimated to be the worlds largest in terms of carats produced with 12.9 million carats. De Beers' and Botswana's joint venture portfolio, Debswana, realized a 17% increase in production in Q4 2013, highlighted by higher grades realized at Orapa and the Orapa One processing plant resuming operations following unplanned maintenance in Q3 2013.