Diameter: Approximately 10.5 cm This item has been unused for many years and stored in a cabinet. I have removed as much dirt as possible, but there are small scratches and stains. There are no cracks. (Since this is a personal inspection, there may be oversights.) Please check the photos, as I have included some of them. I do not know what material it is made of. This is a set of 5! When shipping, I will stack and pack them. I will use cushioning material to prevent them from scratching each other. Please purchase only if you understand that this is a used item and has been stored at home.