The tea is prepared in powder on which the boiling water generates a white froth which is more enjoyable when the porcelain is dark. The Jian kilns provide an additional visual refinement. The iron saturated glaze generates chemical precipitates that create different patterns depending on the precise time at which the process is stopped.
The basic effect consisting of streaks is named hare's fur. A more subtle next step brings a network of iridescent spots, sometimes with halos, constituting patterns known as tea dust, partridge feather or oil spot. Modern chemists failed to reproduce the chemical purity of the iron oxide of the grown solidified drops from the Song porcelain.
On September 15 in New York, Christie's sells a tea bowl 12 cm in diameter realized in Jian technique during the period of the Southern Song around 800 years ago, lot 707 estimated $ 1.5M, with its rare and beautiful wall surface of oil spots on a black background.
The Japanese continued to enjoy the black tea bowls of the Song which they imitated under the name of tenmoku. The bowl for sale is accompanied by a lacquered box probably from Edo period and was registered in Japan as an important art object from 1935 to 2015. It comes from a Japanese collection of old Chinese porcelains.
This piece is the highlight of the second sale of the Linyushanren collection of Song dynasty ceramics. Please watch the video shared by Christie's to introduce this session :
SOLD for $ 11.7M including premium