Photo taken on April 28, 2011 shows a necklace watch of French Duchess de Luynes exhibited in Hong Kong, south China. Made in 1853 specially for the Duchess de Luynes, the watch and its chain are decorated with gold, silver, bloodstone, rubies, diamonds and pearls. 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]