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Located in the Yakutia region of Russia , the Botuobinskaya diamond is estimated to contain roughly 70 million carats . The mine , which is scheduled to commence production in 2015 , is owned and operated by Nyurba mining and processing division of ALROSA . The company began the first phase of the stripping operation in late 2012 . The operation will last three years with mining operations expected to begin in the fourth quarter of 2015 . The Botuobinskaya mine will produce 1.5 million carats of diamonds annually for more than 40 years .

38 September 2014