古白玉龍紋龜紋鏤雕佩 The white jade bi ornament is of flattened disc form, openwork carved on the exterior to depict two mounted dragons confronting two archaic characters, the disc surface carved with mythical beasts and raised bump patterns, the jade is of yellowish-brown color tone with mottled interior and slight russet. Length: 5 in (12.7 cm) Diameter: 4 in (10.2 cm)