Porcelain is an art form in Japan that dates back to the Neolithic era. They have had a lot of practice making dishes! Japanese porcelain is so lovely to hold. It is both dishwasher and microwave safe. The scallop dish is 3 1/2 inches in diameter and moderately deep. It will look great on your table at each place for a condiment or sauce. The color is deep and with the crackle finish there are lines of darker and lighter color.