Material: blue and white porcelain. Bottom diameter: 15.5cm. Blue and white porcelain, also known as white blue and white porcelain, is one of the mainstream varieties of Chinese porcelain and belongs to underglaze colored porcelain. Blue and white porcelain uses cobalt ore containing cobalt oxide as raw material. The cobalt material is blue after firing. It has the characteristics of strong coloring power, bright color, high firing rate and stable color. Blue and white porcelain in the Ming and Qing Dynasties is the most popular. It is a popular porcelain for home furnishings. It can also be used for collection and appreciation or as a gift to friends. Welcome dear customers to our store. 1: Our customer service online time is from 07:00 to 24:00 Beijing time. You have any questions. We will reply to you immediately. (Except some countries and APO/FPO). Your order address MUST. Unless you have a requirements on it! Looking forward to your understanding! You will be responsible for Custom duty in some. Your support means a lot to us. We will help you solve it. And make you satisfied about it. 3 : We will give you an answer in 24 hours, If you don’t get the answer during this time, please kindly resend them. Damages due to incorrect operation, used and Worn. Please trust us and Confident With us!