Research Article

Conference Paper

36th International Gemmological Conference (IGC2019), Nantes, France

Gemmological and Chemical Characteristics of Yiqisong Peridot, Jilin, People Republic of China

By Tasnara Sripoonjan, Montira Seneewong Na Ayutthaya, Pimtida Bupparenoo, Nalin Narudeesombat, Thanong Leelawatanasuk, and Malin Sawatekitithum

2019, August 29

Figure 1: Representative samples of Yiqisong peridot from China ranging in weight from
1.60 to 2.80 ct (Photograph by T. Sripoonjan)

China has traditionally been a territory of a great conundrum with a diversity of natural resources including minerals and gems, and especially green colored stones (e.g. jade, prehnite and peridot). Peridot has been found in a number of different areas of China. Since 1979, China has mined the peridot from the Zhangjiakou-Xuanhua area of Hebei Province (Koivula and Fryer, 1986; Keller and Fuquan, 1986). Recently, the significant deposit of gem-quality peridot has been found in the area called Yiqisong, Yanbian of Jilin province. At first glance, these peridots strikingly show a medium toned yellowish green attribute with high clarity. The average size of relatively clean stones was up to 2 ct. This article describes their detailed gemological characteristics, namely, basic properties, internal features, absorption spectra and chemical compositions.
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1. The Gem and Jewelry Institute of Thailand (GIT), Bangkok, 10500 Thailand
2. College of Creative Industry, Srinakarinwirot University, Bangkok, 10110 Thailand