The mesh size of the purple Clay used in Jianshui Pottery is much higher than that of other types of ceramics, usually over 200 mesh and can even reach over 300 mesh. Works made from such finely textured clay have many distinctive features in both craftsmanship and finished products.
The foundation of unglazed polishing is fine clay. If the clay has a low mesh size or a grainy feel, it is unsuitable for unglazed polishing. The clay used in Jianshui pottery exceeds 200 mesh and is as fine as ointment. Those who have handled Jianshui purple pottery can personally experience the feeling of touching the surface of a clay pot, which is smooth like jade with no graininess at all. This is why Jianshui pottery can be polished to a luster as smooth as jade and even shiny enough to reflect light.
Fine clay offers greater plasticity. Carving and filling on wet clay while preserving the essence of calligraphy and Painting is one of the most unique aspects of Jianshui purple pottery. The reason why it's possible to paint, engrave patterns, and fill the clay (multiple times) on wet clay without damaging the body and achieve a high degree of fidelity is due to the high mesh size and fine texture of the Jianshui purple clay, making it easy to carve.
Fine clay also facilitates the development of a patina. After polishing, the surface of Jianshui purple pottery is very smooth, with naturally transitioning curves. During use, whether splashed with Water or touched by hand, the contact is more even. After long-term soaking and nurturing, the patina on the object becomes uniformly developed.
Article by | Zhaanshan