Rio Tinto showcases the world’s rarest red, pink and blue diamonds in Tokyo
30 July 2013 The world’s most exclusive diamond sale, the Argyle Pink Diamonds Tender, is being previewed in Tokyo for the first time in five years. Argyle Pink Diamonds manager Josephine Johnson said, “We are delighted to be back in Tokyo to showcase the finest red, pink and blue diamonds from the Argyle mine in …