Jade Bi disc, late Warring States period to mid-Western Han dynasty, 275-74 BCE

Jade Bi disc, late Warring States period to mid Western Han dynamics, 275-74 BCE

• Image Number: al:Mineral/jade jewelry/jade
• Description:
  Blue jade, Two pairs of ends on the outer edge are dark brown, and other parts are white grain and mottled, translucent. Rounding, planing, contour rounding; The middle hole and the outer edge are neat: the surface of the device is carved with patterns of cattles. The cattail pattern is arranged orderly, and the top surface is large