Attached is the contextual analysis for the 9th CE Tang blue-and-white stoneware.

*UPDATED FOR EASIER READING*
Contextual Analysis
This blue-and-white ware was made in China, probably Gongxian kilns, ca 830s
Stoneware, diameter 23 cm
9th Century Potters in both China and West Asia contributed to the ninth-century creation of the earliest known blue-and-white ceramics. It is a combination of China’s superior ceramics technology with the unique cobalt blue glaze of Iran.
Initially, Near Eastern traders of China shipped white stonewares and porcelain to West Asia where they attempted to copy them. They attempted to cover their earthenwares with a white tin glaze but did not achieve the same quality as the original. However, it is through this that they began decorating their new white wares with their cobalt blue glaze. Again, the means by which they were applying the blue glaze resulted in a less than stellar final product.
The earliest known blue-and-white stonewares were created as a result of the interaction between China and West Asia in the 9th century. The blue-and-white ceramics of the Belitung Shipwreck were painted with a blue glaze. The practice of painting with cobalt blue seems to have started with Basran potters. Despite being made in China, they used cobalt blue glaze that had likely been mined in Iran, which shows the level of globalisation already happening during the 9th century.
The Gongxian potters painted a lozenge pattern with flowers in the centre of it. This design appears on a variety of objects bound for the Abbasid, where the design originally developed. The lozenge motif is a design favoured in the Middle East, which again, shows the connection between China and the Middle East. It also possibly means that the Chinese were trying to create these plates for the Middle Eastern market which was the Abbasid Empire that includes modern-day Iran, Iraq, and the surrounding regions.
The blue-and-white dishes discovered with the ship are the first and earliest complete Chinese blue-and-white ceramics known to exist to date. This gives us insight into the birth of blue-and-white Chinese ceramics and its subsequent popularity among in the world – inspiring others to try to copy and eventually succeeding in achieving a similar quality.
While the blue-and-white stonewares of Gongxian kilns have been claimed to be the earliest examples of the design, it is only in the Jingdezhen kilns where blue-and-white porcelains really took off which then inspired the imitations and rush to create others of similar quality.
Bibliography
“Blue-and-White Dish.” Asian Civilisations Museum. Accessed November 1, 2018. https://www.acm.org.sg/galleries/tang-shipwreck.
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“The Cargo: Blue-and-White Ceramics from the Gongxian Kilns.” Asia Society. Accessed November 1, 2018. https://asiasociety.org/new-york/exhibitions/secrets-sea-tang-shipwreck-and-early-trade-asia.
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