Corelle Corelle Miffy 3-piece dish set * Lunch plate / lunch dish: 26cm * Medium plate / flat plate: 21.5cm * Cup (Corning): Reinforced porcelain? I have washed and stored these in the cupboard. Although unused, they have been stored for a long time. I think they are clean, but there may be small scratches or minor stains if you look closely. If you are concerned, please refrain from purchasing. m(_ _)m