User:Geoli

Li Jianjun Li Jianjun is a National certified gemmologist, Senior quality engineer in gem and jewelry and adjudicator on the trade examination about diamond, gems and Precious metals jewelry testing in the People's Republic of China (PRC). He is the first person publishing the Polymer-filled aquamarine. Li Jianjun was born in Changle county of Shandong province of PRC in 1976. There has been the famous Sapphire mineral deposit from 1986. Sapphire is the precious gift brought to inhabitant of Changle by volcano. In September 1995, Li Jianjun began to go to the gemological institute, the Geosciences University of China in Beijing. In June 1999, he obtained Bachelor's degree in engineering on gemology. Li Jianjun has been practicing gemology after graduating from University. From April 1999 to the beginning of 2002, he worked at the National Gems Testing Center in Beijing of PRC. From 2002 to date he has been working in National Gold & Diamond Testing Center of China (NGDTC) and Shandong Institute of Metrology, in Jinan city, Shandong Province of China. To date, he and his many co-authors have published many articles[1-13] in gemological journals around the world.

references

1 Li Jianjun. (2005) The identification of impregnated nephrite. The Australian gemologist. Vol.22, No. 7, pp. 310-317. 2 Li Jianjun. (2006) The adverse impact of scatter on the tone of Shandong Sapphire. The Australian gemologist. Vol. 22, No. 9, pp. 408-411. 3 Li Jianjun, Luo Yueping, Chen Zhenyu, Meng Lijuan 2007.06 Usefulness and limitations of using routine FTIR spectra for identifying gemstones compared with the use of classical FTIR spectra using KBr pellets The Australian gemologist Vol.23，No.2 64-70 4 Li Jianjun, Liu Xiaowei, Zhang Zhiguo, Luo Yueping, Cheng Youfa, Liu Huafeng 2008.12 Visually distinguishing A-jadeite from B-jadeite The journal of gemmology Vol.31，No.3/4 125-131 5 Li Jianjun, Sun Yuan, Hao Wangjiao, Luo Han, Cheng Youfa, Liu Huafeng, Liu Ying, Ye Hong, Fan Chengxing 2009.09 Polymer-filled aquamarine Gems & Gemology(SCI) Vol.45，No.3 197-199 6 Cheng Youfa, Wang Jiyang, Tian Liangguang, Zhang Huaijin, Li Jianjun 2009.12 Application of Ion Implantation Technique in Optimization Treatment of Shandong Sapphire JOURNAL OF SYNTHETIC CRYSTALS (In Chinese with English Abstract , EI core periodicals) Vol.38，No.6 1472-1476 7 Fan Chunli, Cheng Youfa, Li Jianjun, Wang Yue, Shan Guangqi, Ding Xiuyun 2010.06 Identification Characteristics of a Sort of New Treated Nephrite Journal of Gems and Gemmology(In Chinese with English Abstract ) Vol.12，No.2 26-28 8 Li Jianjun, Wang Yue, Li Ting, Liu Huafeng 2010.10 Identification of an imitation of the yellow Tianhuang stone covered by chalkiness SUPERHARD MATERIAL ENGINEERING(In Chinese with English Abstract) Vol.22，No.5 57-60 9 Li Jianjun, Yu Xiaoyan, Cai Jia, Liu Xiaowei, Fan Chengxing, Cheng Youfa 2010.12 The gemological properties and infrared spectra of brucite, an imitation of nephrite and Shoushan stone The journal of gemmology Vol.32，No.1-4 67-73 10 Li Jianjun, Liu Xiaowei, Wang Yue, Fan Chengxing, Ye Hong, Cheng Youfa, Liu Dianzheng 2010.12 FT-IR of the SiO2 Gem as the Disparate Crystallization INFRARED(In Chinese with English Abstract) Vol.31，No.12 31-35 11 Li Jianjun, Hao Wangjiao, Sun Yuan, Luo Han, Cheng Youfa, Liu Huafeng, Liu Ying, Fan Chengxing and Ye Hong 2011.03 Comparative study of different types of filled rubies The Australian gemmologist Vol.24，No.5 106-115 12 Cheng Youfa, Li Jianjun, Fan Chunli, Zhang Zhigang 2011.03 Gemmological Characteristics of Taishan Jade Journal of Gems and Gemmology(In Chinese with English Abstract ) Vol.13，No.1 29-32 13 Li Jianjun, Liu Xiaowei, He Wenjun, Cheng Youfa, Liu Huafeng, Liu Haibin 2011.09 Infrared Spectral Proof of An Out- of-phase Material on Surface Cavity of Almandine Journal of Gems and Gemmology(In Chinese with English Abstract ) Vol.13，No.3 38-41