Chinese Yunzi stones from the Province Yunnan. These Go stones are made of pressed stone, The exact consistence is a secret.
Chinese Go players like these stones a lot, because the can be used to analyse a game: In a game the flat side of the stones is on the board, when analyzing the flat side is on top. In this way one can recognize which stones are from the game an which are used to analyze the game.
Stones are placed in practical plastic boxes.
Measure: 22 x 6 mm