Diamonds from the Argyle mine in Western Australia are coloured by a rare geology, mining experts say.
Coloured diamonds gain popularity as they fetch high prices at auctions
Connoisseurs know their real value. Inspired by their vibrant colours, fine jewellers such as Graff, Cartier and Chanel create exquisite pieces
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Special Report - Jewellery
Diamonds from the Argyle mine in Western Australia are coloured by a rare geology, mining experts say.