Tuesday, 3 May 2016

‘Impossibly rare’ violet diamond unveiled by Rio Tinto


The Argyle Violet
A rare violet diamond, the largest of its kind ever found at Australia’s remote Argyle mine, will be the centrepiece of Rio Tinto’s annual pink diamonds showcase.

The rough gem originally weighed 9.17 carats and had etchings, pits and crevices. After weeks of assessment, the Argyle Violet was polished down to a 2.83 carat, oval-shaped diamond.
The GIA gave a colour grade of Fancy Deep Greyish Bluish Violet.

Rio Tinto said violet diamonds were extremely rare with only 12 carats of polished stone produced for the tender in the past 32 years. The 2016 tender will begin private trade viewings in June.