Sapphire in Western Han Dynasty
Collected in Yangzhou Han Guangling Tomb Museum
Diameter 12.3cm, aperture 4.1cm, 0.5 cm in thickness
Unearthed in II tomb Shenju Mountain Gaoyou, Yanzhou in 1980
Plain without patterns; in the middle, a crack has been repaired, while a corner is missing; it seems like jade with yellow color and several ice cracks.