The 35.56-carat Wittelsbach blue diamond, dating to the 17th century, was purchased by international jeweler Laurence Graff, the auction house said in a release. Graff was bidding against Aleks ...

“Christie’s has had the honor of offering some of the world’s most important Golconda diamonds, including the Archduke Joseph, the Princie, and the Wittelsbach. With its royal ...