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Rio Tinto puts largest ‘red’ diamond on market

Rio Tinto said Friday it was putting up for sale the biggest “red” diamond ever produced by its Australian mine amid an “explosion” in demand from Asia for the rare pink-hued stones. The Argyle Phoenix, a 1.56 carat gem, is one of three red diamonds on offer at the annual…

Pink diamond sells for nearly $40 million at U.S. auction

A 34.64-carat pink diamond has sold at auction in New York for nearly $40 million, setting a new record for Christie’s auction house. Dubbed the “Princie Diamond,” the gem is “one of the largest and finest pink diamonds in the world,” with a “fabulous provenance,” Christie’s jewellery chief Francois Curiel…

Unprecedented demand for Rio’s rare pink diamonds

Global miner Rio Tinto said on Monday there was unprecedented demand for its rare pink and blue diamonds at its annual sale, with India and Japan among the keen buyers. The 2012 Argyle Pink Diamonds Tender, seen as the world’s most exclusive diamond sale, featured 56 single pink diamonds, including…