Wall Street Journal - Inside De Beers’s Hunt for Africa’s Elusive Diamonds < 5min

De Beers’ undertaking highlights the dilemma faced by diamond miners, who are forecasting diminishing supplies if they don’t discover new caches of gems. Only a blockbuster discovery will enable them to keep long-term production at current levels, according to De Beers and analysts. ... The problem: Only a fraction of the world’s underground diamond deposits are large enough to justify the expense of harvesting them. ... Global diamond production is expected to peak in 2017, when 164 million carats of diamonds are forecast to be produced, according to McKinsey & Co. After that, production is expected to go into a long-term decline, unless major new discoveries are made, McKinsey’s forecasts show. ... De Beers is marshaling new technology, including advanced computer algorithms that can comb through the mass of data the company gathers as it scans the Kalahari for signs of a diamond-studded kimberlite, a pipe of solidified lava containing rich veins of diamonds pushed up from the earth’s mantle. Only about 15 in 100 kimberlite pipes contains even one diamond, and only a fraction of those have enough to make them worth building a mine to harvest the diamonds

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