400-0083 481-1 Kodaira, Hirase-cho, Kofu-shi, Yamanashi Koshuya TEL 055-270-0659 It is 1000 years ago that crystal ore was discovered at the peak of Mount Kinsen in the mountains of Mitake Shosen Gorge, and the quartz work began in Yamanashi Prefecture 1000 years ago, which is said to be the origin of quartz work. There is a Koshuya in Shosenkyo, a place with such a history, and there are also mechanical tools for processing crystals. We are producing tools that can be processed more conveniently and in a shorter time. This Koshuya channel is also to familiarize you with the crystal polishing process
