BBC:

The rare diamond was found at Rio Tinto's Argyle diamond mine in Western Australia's East Kimberly region.
Estimated to be worth millions, it has been named the Argyle Pink Jubilee, and is being cut and polished in Perth.
It will be sold later this year after being shown around the world, including in New York and Hong Kong.
The process of polishing and cutting, which began in Perth on Tuesday, is expected to take about 10 days. The diamond will then be graded by a team of international experts.