A white and russet jade ring and a walrus tooth box Qing dynasty, 18th century | 清十八世紀 白玉扳指及海象牙雕盒

Walrus ivory is known as "Qiujiao" in the imperial archive of Qing dynasty. The ivory studio in the palace often dyed it to a jadeite-like colour, imitating the texture of elephant ivory. Compare with a walrus ivory hairpin in the Palace Museum, Taipei, acc. no. guza 004643.

海象牙稱虬角，又稱秋角。清宮牙作常將其染成翡翠色，質地類似象牙。參考台北故宮藏一件秋角別頂簪，館藏編號故雜004643。