Was Lacquer the Key Ingredient for Luxurious Jinyin Pingtuo Products in the Tang Dynasty of China (AD 618–907)?

Abstract

Jinyin pingtuo is one of the most sumptuous decorative methods applied on ‘lacquered' objects described in Tang dynasty literatures. Two Tang dynasty objects, a silver bowl and a bronze mirror, in the British Museum collection said to be made by this technique, were scientifically examined to confirm the application of the technique. Although the metal décors levelled with the rest of the surfaces on these objects suggested the application of the pingtuo method, lacquer, a major ingredient of this technique, was not identified by Py (HMDS)‐GC–MS in any of the four samples analysed. The results question the use of lacquer in the pingtuo technique as usually described. The detection of shellac and oil in the bronze mirror aligns with other studies on similar objects, whereas proteinaceous materials as main ingredient of the decorative layers of the silver bowl, appear less usual. Further comparative study by scientific analysis of similar objects in other museum collections or from excavations is required to help better understand the use of lacquer in ancient China.

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