Coalport porcelain overglaze decoration, mostly with floral subjects. A further round of mergers in 1819 brought moulds and skilled staff from Nantgarw porcelain and Swansea porcelain to Coalbrook, which continued to thrive through the rest of the century. The Coalport factory was founded by John Rose in 1795; he continued to run it successfully until his death in 1841. The company often sold its wares as Coalbrookdale porcelain, especially the pieces with flowers modelled in three dimensions, and they may be called Coalport China. Rose employed William Billingsley, formerly at Nantgarw, as chief painter, and Billingsley's chemist, Walker, who initiated at Coalport
Porcelain coloured, translucent (except when of considerable thickness), and resonant". However, the term "porcelain" lacks a universal definition and has "been applied in an unsystematic fashion to substances of diverse kinds which have only certain surface-qualities in common". Traditionally, East Asia only classifies pottery into low-fired wares (earthenware) and high-fired wares (often translated as porcelain), without the European concept of stoneware, which is high-fired but not generally white or translucent. Terms such as "proto-porcelain", "porcellaneous" or "near-porcelain" may be used in cases where the ceramic body approaches whiteness and translucency. A high proportion of modern porcelain is made of the variant