Period:Warring States period Production date:5thC BC - 2ndC BC Materials:jade Technique:incised Dimensions:Diameter: 10.80 centimetres Description: White altered jade disc bi worke...

Period:Neolithic Period Production date:4000BC-2000BC Materials:nephrite Technique:cut, polished, incised, Dimensions:Diameter: 21.60 centimetres Description: Disc-bi of semi-trans...

Period:Neolithic Period Materials:jade Technique: Dimensions:Diameter: 19.70 centimetres Description: Bi. Made of jade (grey.brown). The hole has been only worked from one side. IM...