These items were purchased new a few years ago from various general stores. Glass: Approximately 25cm in diameter. There are a few scratches on the surface (see photo 4), but I haven't used it much, so I don't know when they occurred. Porcelain: Approximately 19.5cm in diameter. I believe I purchased it from Actus, but I may be mistaken. I have used it 2-3 times. Please check the condition in the photos and only consider purchasing if you are not concerned about the condition. Thank you for your consideration. Yu-Pack (shipping service)