Japanese-type biconvex Yunzi go stones (lentil shape).
Japanese-type biconvex Yunzi go stones (lentil shape). These top quality stones are used in official Asian tournaments. Dense, thick, and very pleasant when playing with their velvety feel, they are considered to be the go stones par excellence.
According to history, yunzi stones, manufactured in China's Yunnan Province, were used by professional, school players and were regarded as precious gifts at the time of Tang Dynasty. The process of making these stones remains secret. According to rumour, Yunzi stones result from a combination of agate and rocks from the Yunnan Mountains.
These stones are ideally combined with shinkaya wood boards.