Dishwasher Safe (maximum 65 degrees centigrade) (although hand-washing is advisable) and Oven Safe (for warming only - up to 100 degrees centigrade). Please Note: Items with a gold or platinum trim must not be used in a microwave therefore this plate is. For more information on how to care for your fine bone china - visit the Royal Crown Derby Care Guide which you can find at'royalcrownderby.