The largest gem-quality rough diamond discovered in over one hundred years is to be auctioned at Sotheby’s London on the
A new world record for any jewellery auction was set yesterday when Sotheby’s sale of Magnificent Jewels and Noble Jewels in Geneva realised $175,097,419 (£121,324,718), eclipsing the previous record of $160.9m (£111.4m) also set by
