I have several stones from Pampered Chef and I love them. It's a home based company which means you either have to go to a home show (a la Tupperware) or you can order them online. They are reasonably priced, too. Pampered Chef has a lot of stoneware - lasagna pans, bread pans, pizza stones, cookie sheets and the like. I have a lot of them and I use them all the time!

Hope this helps!