Rio Tinto’s diamond output down 14% in 2014

[caption id="attachment_815263" align="aligncenter" width="600"] Diavik mine is located in Canada’s diamond-rich and remote North West Territories.[/caption] Rio Tinto’s (ASX:RIO) total rough diamond output fell 14% in 2014 from a year earlier due mainly to the transition of its Argyle mine...