The "sensational" 163.41-carat flawless diamond, suspended from an emerald and diamond necklace called The Art of Grisogono, will was one of the highlights at the Christie's autumn jewel auction. AFP PHOTO / Daniel LEAL-OLIVAS
The "sensational" 163.41-carat flawless diamond, suspended from an emerald and diamond necklace called The Art of Grisogono, will was one of the highlights at the Christie's autumn jewel auction. AFP Show more

Largest diamond yet auctioned sells for record $34m in Geneva