Refers to the style of porcelain, originally made in China, characterized by the inclusion of an opaque enamel color that ranges from pink to purplish rose. The pigment itself is called Purple of Cassius, derived from colloidal gold, and was taken to China by Jesuit missionaries around 1685. The style reached its peak during the reign of Yongzheng (1723-1735), after which it became increasingly commercial and largely for export to Europe. The style also occurs in French, German, and English wares.