Photo taken on April 28, 2011 shows a chatelaine watch made in 1850 and decorated with bloodstone, rubies, diamonds and pearls, which belonged to a duchess, exhibited in Hong Kong, south China. Paris-based jeweler Chaumet Thursday held a media preview of its "200 Years of Timepiece Creation" exhibition in Hong Hong to celebrate its 200th anniversary of making jewelry and watches. [Xinhua/Song Zhenping]