China (Changsha) International Mineral &Gem Show (CMGS for short) is an international high-end professional show approved by the State Council of the People’s Republic of China, co-organized by the People’s Government of Hunan Province and Ministry of Land and Resources of the People’s Republic of China. The first CMGS will set sail from May 16th to 20th, 2013  in Changsha City ,Hunan Province.