A one-of-a-kind yellow and pink diamond ring showcasing the finest gems from Rio Tinto’s diamond mines has been unveiled in Sydney. Titled the Diavik Midnight SunTM, this statement piece is a powerful symbol of the union of two of the world’s most coveted jewels: yellow diamonds from Rio Tinto’s Diavik diamond mine in sub-Arctic Canada, and Argyle Pink DiamondsTM from the iconic mine in the remote East Kimberley region of Western Australia.