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Open the section "Definition and Classification of Gems" under the section "Overview of Gem Processing and Materials", Only in the video, associate professor Liao wangchun of the jewelry department of Jinling institute of science and technology explained: there are 45 varieties of natural gemstones, 32 varieties of natural jade, 9 kinds of available and national standard named organic gemstones, and the most important types of artificial gemstones are synthetic gemstones, artificial gemstones, pieced gemstones and recycled gemstones..."Postscript: This mud dyeing experience made me feel a lot, Our traditional dyeing can be passed on by someone. I hope more people can love to do such things. We will continue to share our plant dyeing and let everyone know more about everything nature has given us. Here, I would like to thank Jian Ping for providing us with the opportunity to experience this. I would also like to thank my friends who participated in this activity: Lan Lan (head of the plant dyeing team on the left bank) and Le Kui (photo text) Solav (translation editor). "慢慢的不过二三百人而已。Mild diffuse simple goiter is qualified.　　“凤凰男”夏志刚发奋苦读十余年，通过了千里挑一的公务员考试，在城市规划局当上了公务员，彻底飞出了山窝窝。一心想通过从政改变自己和家庭命运的他制定好人生规划，向处长局长的目标奋勇前进。据日媒消息报道，女演员·滨边美波主演的电视剧《DOCTOR White》的特别篇将于3月28日22点15分在关西电视台·富士电视台系播出。故事梗概和场面照片也解禁了。