This piece of pottery can be used as an oil lamp or a flower vase. Overall size of bottom attached plate is 5 ¼" in diameter with height at 3 ½". It has a clay top that hold the oil wick from the reservoir to the flame. I would suggest using a ultrapure paraffin oil if you use this for a lamp. It a lovely piece with a handle so that you can carry it from one room to another when the lights go out. In very good condition with no chips or cracks.