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Rio Tinto unveils large vivid pink Argyle diamond

Rio Tinto has unveiled the largest vivid pink diamond in the history of its Argyle pink diamonds tender, during a preview in Sydney. The 3.14 ct polished emerald cut diamond, known as The Argyle Alpha, is part of the line-up of 63 rare pink, red and violet diamonds in the 2018 Argyle pink diamonds tender. Following viewings in Sydney the collection will be showcased in Hong Kong and New York with bids closing on October 10.

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