[1] [1] Ouyang Qiumei. Study on characteristics of purple jadeites and color mechanism [J]. Gem and Gemology Journal, 2001, 3(1): 1-6.

[2] [2] Harder H, Gottingan. Trance element as coloring agents in jadeite [J]. Gemm, 1995, 24(7): 508-511.

[3] [3] B Curtiss. Visible and Near Infrared Spectroscopy for Jade Artifact Analysis [M]. Salt Lake City: University of Utah Press, 1993. 73-81.

[4] [4] G R Rossman. The optical spectrum of Fe3 + and Fe2 +-Fe3 + inter-valence charge transfer in jadeite from burma [J]. American Mineralogist, 1974, 59: 868-870.

[5] [5] Chen Binghui, Qiu Zhili, Zhang Xiaoyan. Preliminary study on mineralogical characteristics of purple jadeites [J]. Gem and Gemology Journal, 1999, 1(3): 35-39.

[6] [6] Wang Yongya, Gan Fuxi. Coloration mechanism and chromaticity of xiuyan jade of China [J]. Spectroscopy and Spectral Analysis, 2012, 32(9): 2305-2310.

[7] [7] Sara J Palmer, B Jagannadha Reddy, Ray L Frost. Characterisation of red mud by UV-vis-NIR spectroscopy [J]. Sectrochimica Acta Part A, 2009, 71(5): 1814-1818.

[8] [8] Chen Chen, Guo Shouguo, Mao Jian. Influence on spectral characteristics of purple jade by heat treatment [J]. Laser& Optoelectronics Progress, 2010, 47(4): 041602.

[9] [9] Liu Xueliang, Fan Jianliang, Guo Shouguo. Spectroscopical characteristics and color-causing mechanism of light pinkred jadetite [J]. Laser& Optoelectronics Progress, 2011, 48(9): 093002.

[10] [10] Chen Zheng, Fan Jianliang, Du Guangpeng. Spectral characteristics of omphacite jade [J]. Laser& Optoelectronics Progress, 2010, 47(10): 101602.

[11] [11] Mattson S M, Rossman G R L. Fe2+-Fe3+ interactions in tourmaline [J]. Phys Chem Miner, 1987, 14(1): 163-171.

[12] [12] I E C Machado, L Prado, L Gomes, et al.. Optical Properties of Manganese in Barium Phosphate Glasses [J]. Journal of Non-Crystalline Solids, 2004, 345(15): 113-117.