By a positioning on tiny studs during cooking without turning the piece upside down, the glaze savings that so displeased at the court of the Northern Song are avoided. The celadon color of which several shades are available equals the refinement of the jade. In the fashion of that time perfect proportions and minimalism are preferred to the complexity of shapes.
Located on what was to become a border zone between north and south, the Ru kilns did not survive the fall of the Northern Song. Their undocumented activity which was perhaps not in the service of the court had only lasted about two decades.
A quarter of a century after the fall of the Northern Song a courtier presents to the Gaozong Emperor of the Southern Song a significant group of Ru ware. The Emperor who was just managing to restore the legendary refinement of his dynasty admires the exceptional quality of these porcelains and especially some pieces whose surface has a texture like ice crackles. This effect modeling the creation of minerals in nature is appreciated as sensational. It was related to the chance of the cooling conditions in the Ru kilns but the Southern Song potters discovered the conditions to be applied to create such a texture at will.
87 pieces of Ru porcelain of the Northern Song are known. Four of them are in private hands.
On April 4, 2012 Sotheby's sold for HK $ 208M including premium over a lower estimate of HK $ 50M a brush washer 13.5 cm in diameter slightly lobed with a smooth texture and a pale color which is close to jade.
On October 3 in Hong Kong, Sotheby's sells as lot 5 a 13 cm round brush washer This intense blue-green piece has an exceptionally shiny crackled surface. The press release of August 22 announces that it is expected in excess of HK $ 100M. Please watch the short video shared by the auction house.
SOLD for HK$ 294M including premium