The hollowed tube carved from a glass bright emerald green material, with a darker inclusion paling to a celadon attachment hoop, Qing dynasty
Lingguan 65.65 x 16.11 x 3.38 mm.
With certificate JC 11526 dated 9/9/97 from Hong Kong Jade & Stone
Laboratory Ltd. stating that the lingguan is natural colour jadeite and no polymer is detected