Clam Go Stone Japanese Clam Flower Seal No. 20 and P black large Go bowl set

180 pieces of Hyuga special clam flower seal No. 20 (thickness 5mm). Kuroishi has 181 pieces of Nachiguro. Mexican clams can only be made up to size 22, but Japanese clams can be made up to size 20. The weight of Go stones is 4g, compared to just over 2g for plastic, assuming a thickness of 5mm. That's why it makes a clicking sound when you hit it. This is a big positive factor in terms of feel. Go bowl: Set of 2 large black plastic bowls