Coalport porcelain as vases, small boxes and table baskets. In 1820 Rose received the gold medal of the Society of Arts for his feldspar porcelain and an improved, lead-free glaze, with which the enamel colours fused in firing. Favourite patterns were the "worm sprig" and the "Tournai sprig" introduced by Billingsley at Pinxton, the Dresden-inspired "Berlin china edge", and the blue transfer willow pattern and blue dragon pattern. During the 1830s the factory initiated the practice of applying a light transfer printed blue outline, to guide the painters. This preserved some of the freedom of hand-painted decoration, while it enabled Rose to
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