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Ranking number one on our list , the Jubilee diamond mine in Russia is the epitome of producing mines . The site is estimated to contain more than 153 million carats of recoverable diamonds , including 51 million carats of probably underground reserves . Owned and operated by the Aikhal mining and processing division of state-owned ALrosA , the site is an open-pit mine operating at depths of 320 meters with expectations of eventually reaching 729 meters . In 2012 , the Jubilee diamond mine produced 10.4 million carats of ore .

48 September 2014