Hetian jade dragon button poetry sealSpecification: high 13.3 cm, 12.3 cm wide. Weighs 3911 gramsIntroduction: take hetian jade for material collection, superior quality of the jade, jade is exquisite, mellow patina, thick material, printed with dragon for the knob, ssangyong intersection back, both dragon forelimbs touchdown, showed the appearance of lies down, dragon horn, protruding eyes, mouth slightly parted, revealing the tooth, the tongue under bending to side of dragons, rather momentum.Whole vividly, carver adept, poetry neat, superb techniques, engraving depth, extremely valuable.