Facts to Know: The Difference Between Ru Porcelain (or Ru Ceramics) and Ru Kiln
Ru Porcelain (hereinafter Ru ceramics) and Ru kiln ceramics are often confused due to their similar names and shared historical roots. However, they are distinct in terms of origin, craftsmanship, and aesthetic characteristics. This article will explore the key differences between these two exquisite forms of Chinese porcelain.
1.Origin and Geographic Indication
- Ru Ceramics (汝瓷):
Ru ceramics are a geographically indicated product, meaning they can only be produced in specific regions. Authentic Ru ceramics are made in Ruzhou and Baofeng in Henan Province, China. These areas are historically recognized as the birthplace of Ru ceramics during the Northern Song Dynasty.
- Ru Kiln Ceramics (汝窑):
Ru kiln ceramics, on the other hand, refer to Ru-style ceramics produced outside the traditional Ru regions. They are often made in places like Jingdezhen and Taiwan, where artisans replicate the Ru style using local materials and techniques.
2. Glaze and Surface Finish
- Ru Ceramics:
Ru ceramics are known for their lustrous glaze, which often resembles the flowing texture of water. The glaze is rich in layers, creating a sense of depth and movement. The most iconic color is sky-blue (天青), but other hues like pale green and grayish-blue are also common.
-Ru Kiln Ceramics:
Ru kiln ceramics typically feature a matte finish, which gives them a more subdued and understated appearance. The colors are often simpler and less varied compared to Ru ceramics, with a focus on replicating the classic sky-blue tone.
3. Clay Body
- Ru Ceramics:
Authentic Ru ceramics are made using incense ash clay (香灰胎), a type of clay mixed with ash from burned incense. This unique material contributes to the ceramics' distinctive texture and color.
- Ru Kiln Ceramics:
Ru kiln ceramics are usually made with white clay (白胎), which is more commonly found in regions like Jingdezhen. This results in a lighter and more uniform base color.
4. Firing Techniques
- Ru Ceramics:
Ru ceramics are traditionally fired using the prop mark technique (or nail support technique)支钉烧). Small ceramic props are used to support the piece during firing, allowing the entire surface, including the base, to be fully glazed. After firing, tiny prop marks remain on the bottom, a signature feature of Ru ceramics.
-Ru Kiln Ceramics:
Ru kiln ceramics are typically fired using the ring-foot technique (圈足烧). The base of the piece is left unglazed and polished after firing, resulting in a smooth, flat surface.
5. Aesthetic and Cultural Significance
- Ru Ceramics:
Ru ceramics are celebrated for their natural elegance and historical significance. They are considered one of the "Five Great Kilns" of the Song Dynasty and are highly prized by collectors for their rarity and beauty.
- Ru Kiln Ceramics:
Ru kiln ceramics, while inspired by Ru ceramics, are more accessible and widely produced. They offer a modern interpretation of the Ru style, making them popular among tea enthusiasts and collectors who appreciate the aesthetic but may not have access to authentic Ru ceramics.
While both Ru ceramics and Ru kiln ceramics share a common heritage, they differ significantly in terms of origin, materials, techniques, and aesthetics. Ru ceramics are a geographically indicated treasure, embodying the pinnacle of Song Dynasty craftsmanship, while Ru kiln ceramics are a modern homage to this timeless art form.
Whether you are drawn to the lustrous, layered beauty of Ru ceramics or the subdued, matte elegance of Ru kiln ceramics, both offer a unique way to connect with the rich history and artistry of Chinese porcelain.
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