Yunzi Lead Content Notice

Recently it has come to light that certain Yunzi stones contains a minor amount of lead in their formulation. While this is not a health hazard when handling the stones normally, they do become a health risk if ingested into the body. It may seem logical to adults that Go stones are not meant for eating, but to small children Go stones can look invitingly like candy.

In addition to the lead related health risks of accidentally eating Yunzi stones, they, and all other Go stones are a serious choking hazard. Go stones are not intended for small children and should be kept away from them at all times, whether in use or in storage.

Yunzi for Marble Stones Exchange Program

We at Yellow Mountain Imports take this lead concern seriously. If you do own a set of Yunzi stones from us and are concerned about its lead risks from accidental ingestion, we will gladly exchange your Yunzi for a set of marble equivalent single convex (size 3, 22mm wide) or double convex (size 30, 8cm tall).

To exchange your stones, simply seal up all your Yunzi without the bowls into separate bags for white and black stones. Then pack them into a secure cardboard box along with your shipping address and send it to:

Please allow 1-2 weeks for your replacement marble stones to arrive.

* For foreign exchanges outside of the USA, please include $37 money order/cashier's check for shipping costs.

Thank You,
Yellow Mountain Imports