This is a ceramic dish. I don't know much about it, so I don't know what kind of ware it is. I hope you can judge from the photos. The diameter is about 15cm and the height is about 6.3cm. Please note that there may be some errors due to amateur measurements. I think it was originally like this, but one of the holes has a chipped edge. Please refrain from purchasing if you are sensitive to this. #MihoDish