Could anyone enlighten me as where to find this clay or its equivalent here in the US? I have a friend who is an artist and would like to start or at least try and make some bonsai pottery. I was able to let him borrow an (erin) pot to get started and he was able to design some prototypes. Not too bad for first try? The color of the clay does not match what I typically see with erin pottery and they feel a lot lighter and brittle. A couple holes in the wrong spot but the glazes turned out nice.