epa10282082 A Christie's employee displays a Diamond riviera necklace pear brilliant-cut diamond of 10,33 carats, main old-cut diamonds of 7.02 and 4.80 carats, circular brilliant-cut of 4.18 carats, old-cut diamonds, gold and silver, during a preview at the Christie's, in Geneva, Switzerland, 02 November 2022. It is estimated to sell between 550,000 - 750,000 Swiss Francs (Euro 557,700 - 760,500). The auction will take place in Geneva on November 08. EPA/MARTIAL TREZZINI
