I've been using this plate (made specifically to flatten stones) a while now at work and now that I have a good amount of experience with it, it's time to introduce it to the rest of you. It says Ken-syou on the label but I suspect it's made by Atoma because the diamonds are arranged in the same cluster pattern (and the blue sticker is the same one Atoma uses). For this plate though Atoma has gone a step further and they've made a diamond pattern as well. Because of the grooves this plate is even faster with less suction. If you're in the market for a new dedicated flattening plate, forget about the regular Atoma and get this one. Here's where I bought it: http://noborihamono.com/ He speaks a bit of English but you have to keep it simple and to the point. He will also ship internationally.