[1] [1] Zhang Peili. Systematic Gemology. Geology Publisher, 2006.

[2] [2] GB/T 16554—2017. Diamond Grading.

[3] [3] Liu Y. US Patent: No.7652755.

[4] [4] Wang Hui, Chen Meihua, Zhong Xiangtao. Super Hard Material Engineering, 2014, 24(2): 54.

[5] [5] Yang Ye, Chen Meihua, Hu We. Super Hard Material Engineering, 2014, 24(1): 54.

[6] [6] Cheng Youfa, Liu Haibin, Fan Chunli, et al. Journal of Synthetic Crystal, 2014, 46(1): 174.

[7] [7] Lapa D, Marc Frans Alida Van de Velde. US Patent: No.8116552.

[8] [8] Ruan Yaohua. China Science and Technology Overview, 2016,14: 210.

[9] [9] Wu Wenjing, Shi Bin, Xu Zhongtian. Journal of Gems and Gemology, 2017, 19(1): 37.

[10] [10] GB/T 9086—2007. The White Standard Plate for Colorimetry and Photometry.