These high quality pots are made from the clay found in the 'Purple Sand'- mines in China. The terracotta orange/red and sometimes brown colours are from special layers in the mine. These particular Yi Shing (YiXing) teapots are known as Zhu Ni pots because of the way they are processed. The teapot makes a higher sound when you tick on it and the material seems harder baked. Using Yi Shing pots for your tea ceremony Gong Fu Cha, is an unique addition to the brewing health quality of your tea. Look for the size you want. Typical Gong Fu size teapots are between 50 and 200 ml., differing for personal use and for use with your family and friends. The larger teapots are also used as a pitcher when drinking tea with a larger group of people or when you want to use mugs for your tea. But remember, the sizes between 50 (for one person) and 200 ml. give the most fragrance and flavor to your tea while you enjoy your tea ceremony. Also go to http://www.highendtea.eu/ for teapots.