Opening Of Rio Tinto's Underground Expansion Of The Argyle Diamond Min

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A pink diamond from the Rio Tinto Group Argyle Diamond mine, is... News PhotoAsia,Australasia,Australia,Australian Culture,Business,Ceremony,Corporate Business,Delivering,Diamond - Gemstone,Finance,Gemstone,Growth,Horizontal,Kununurra,Man Made Object,Mine,Miner,Mining,Oceania,Opening Ceremony,Photograph,Precious GemPhotographer Collection: Bloomberg 2013 BloombergA pink diamond from the Rio Tinto Group Argyle Diamond mine, is displayed for a photograph during the opening ceremony of the company's underground expansion of the Argyle diamond mine in Kimberley, Australia, on Tuesday, April 30, 2013. Production at Argyle, which supplies more than 90 percent of the world’s pink diamonds, will rise to 20 million carats annually as production moves underground, while costs will fall. Photographer: Ian Waldie/Bloomberg via Getty Images