The cobalt used for blue-and-white ceramics was locally mined in China and has a high manganese content. But famille rose porcelain needed finer European cobalt, which gives a purer blue.

Qinghua (blue-and-white) porcelain is among the brightest jewels of Chinese artwork. Discerning collectors view it as a lifetime goal to own examples of the fine, centuries-old pottery, which ...

A qinghua porcelain flask from the Yuan Dynasty is on show at Poly Art Museum in Beijing. [China Daily] Qinghua (blue-and-white) porcelain is among the brightest jewels of Chinese artwork.