The archaic Hetian jade bi disc is of flattened form, the body is of disc form, carved with flying dragons amidst clouds, two confronting dragons openwork carved above the disc, surrounding three characters in the center, the ade is of yellowish-copper color tone with mottled interior and russet.|||Length: 12 in (30.5 cm) Width: 8 in (20.3 cm)|和田古玉器漢代出廓宜子孫玉璧|