Yongzheng incised four-character mark and of the period The luminous stone with natural swirls and ripples of scarlet brown, yellow and white on a translucent ground, superbly carved with shallow rounded sides raising from a short foot to a narrow-flat rim, the base incised with the four-character mark yongzheng nianzhi, the stone smoothly polished and patinated to a lustrous finish, box. 12cm (4 3/4in) diam. (2).