Christie's sale of magnificent jewels in Geneva achieved a total of more than $78M, the highest result for any jewellery auction ever held by the auction house in Switzerland. The top lot was a 56 ct heart-shaped diamond, which sold for more than $10M...

Spectucular pair of gem-set and diamond ear clips, JAR. Photo Sotheby's Each designed as a stylised articulated feather, set with circular-cut gemstones such as sapphires, garnets, tourmalines and spinels of various sizes and colours, accented with single-cut...

Magnificence . An unmounted heart-shaped D colour, Internally Flawless, Type IIa diamond weighing 56.15 carats, with excellent polish and symmetry. Estimate: SFr.9,000,000-12,000,000 / US$9,000,000-12,000,000 / €6,600,000-8,800,000 / £5,600,000-7,500,000....