... .Grad range:AAAAA,AAAA,AAA,AA,AD.more than 15years international trading experience E.The 4th year Gold Supplier on AlibabaF.Lead ... synthetic gemstone--- Wuzhou city, Guangxi, China. Founded in 1993, our company has been processing from Guangxi, Guizhou, Yunnan, Zhejiang, and Jiangxi ...