Jia-jing: Year 43, Month 2, Day 1
12 Feb 1564
Yun-nan presented to the Court over 760 liang of precious stones. The Emperor disliked their fragmentary nature and small size and ordered that blue and red stones with a diameter of two cun and yellow stones with a diameter of one cun as well as purple crystal stones be obtained and presented.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 90, page 8631