Smaller plate Diameter approx. 9 cm Larger plate Diameter approx. 11 cm The smaller plate has a slight depth. The larger plate is a flat plate. New and unused, but have been stored for a long time at my parents' home. The black box shown in the photos will not be included when shipped. It will be carefully wrapped in bubble wrap and sent. Please understand. As this is amateur inspection and home storage, if you are at all concerned, I apologize, but please refrain from purchasing. We ask for purchases from those who understand.