On Nov.5th, 2009, the auction house in London, Sotheby's, auctioned a China emperor's jade stamp of Qing Dynasty era, “八徴耄念之宝”(pronounced as "Ba Zheng Mao Ning Zhi Bao) for about US$6 millions. This stamp is made of green nephrite, and has a dimension of L130 x W130 x H103 cm.