The inner square has a smooth texture, and the color changes depending on the reflection, creating a deep hue. This is a set of four square black matte finish plates with a rough, matte feel on the sides and back. Very stylish. They have a sense of weight and make food look great! I used them a little after purchasing them, and then washed and stored them carefully. I think they can be used in various ways, such as adding a touch of chic to your cooking or food photos (^^) They are cool plates. - Quantity: Set of 4 - Color: Black - Shape: Square - Surface Finish: Matte finish Purchased from a pottery shop in Tajimi Thank you for viewing. Thank you very much. m(__)m