Sotheby's auction house in London displayed what is expected to be the world’s most expensive cut diamond, the Pink Star, due to be auctioned in Hong Kong in April 2017. RT looks at some of the most expensive rocks out there.
Sotheby's auction house in London displayed what is expected to be the world’s most expensive cut diamond, the Pink Star, due to be auctioned in Hong Kong in April 2017. RT looks at some of the most expensive rocks out there.