A model poses with a pigeon's blood ruby ring, a choker and a pair of ear clips with sapphires and diamonds at Sotheby's auction house in Geneva, Switzerland November 4, 2015. The ruby, weighting 8.48 carats, is estimated to sell for US $ 6 to 9 million, the choker, created in 19010 by Chaumet, US $ 80,000 to 120,000 and the air clips with sapphires and diamonds US $ 500,000 to 800,000 when auctioned during the Magnificent Jewels and Noble Jewels auction in Geneva on November 11. REUTERS/Denis Balibouse