Mr. Tachikichi, I believe these are medium-sized bowls. There are five. They are diamond-shaped. Please see the images. These were stored at my parents' house. They are new and unused. The box has storage stains. There are also some scratches. Regarding the size, I wasn't sure if they were small or medium bowls, but since they exceed 15 cm, I've classified them as medium-sized. - Set includes: 5 bowls - Design: Fish and floral decoration - Colors: White base with blue, red, green, and orange floral patterns - Material: Porcelain - Box: Comes with a dedicated box (with stains) Thank you for looking. I have pets. Please refrain from purchasing if you are concerned. Tachikichi