Like any handmade piece, hand washing is strongly recommended.
If your purchased item is just plain clay and glazes, it can go in the microwave and dishwasher.
If there is gold (metal), silver, or gemstones on your item: It is NOT Microwave or Dishwasher safe.
My ceramic pieces are NOT designed to go into the oven or freezer. Ceramic can crack and explode with sudden and large changes in temperature, which could result in damage or injury.