Only seven diamonds of this sort have been sold at auction — the last of which went for...
More about 'sotheby's'
Sotheby's is set to auction off one of the rarest diamonds in the world
Dominic-Madori Davis, Business Insider US
A 1962 Ferrari 250 GTO just sold for a record-breaking price of R706 million at auction
This car was long considered "the holy grail" of the car collector world.
Brian Pascus, Business Insider US