JGGL was founded in 1995 by Masashi Furuya who had a long experience of gem testing and gemstone trading. He and his family stayed in Idar-Oberstein, Germany from 1960s. As Idar-Oberstein was the center of the color stone trading at that time, he enjoyed many new finding of gemstones, wonderful cutting and carving technique of that city and the development of analytical gem identification. Also, his passion to gemstones led him to the mining project at sapphire rush in Ilakaka, Madagascar as a geological advisor from 1999. His and JGGL’s philosophy always says that gemstones are more than just a value, and they are emotional and romantic because it carries the various thoughts of miners, cutters, dealers and customers. With this philosophy, he set up the laboratory to share the knowledge and passion to gemstones with consumers, dealers, minors and all people related to gemstones.