OK, here is what I learned, and then go ask your own rov. If it is not glazed with glass and there is no metal on it at all (like gold leaf or silver, even), no tevilah is needed. If glazed with glass, it needs tevilah but no bracha, so it should be toiveled with a new metal utensil (like a small can opener, or knife), and the bracha is made on the metal, with the kavanah being that if the glass required it, the bracha covers it as well. ASK YOUR ROV.