NEOLITHIC PERIOD, LIANGZHU CULTURE (CIRCA 3300-2200 BC) A CHINESE UNEARTHED JADE BANGLE Outer diameter, inner diameter and thickness approximately 80mm, 55mm and 15 mm respectively
新石器時代 良渚文化 生坑玉鐲 外直徑、內直徑及厚度分別約為 80 ,55及15 毫米