This and many other flowers, and occasionally fruits, were painted in the same manner as a picture, on an enamel ground of uniform colour--generally white, and sometimes pale blue, yellow, or black. Small plaques enamelled and painted thus are popularly known by the name of "Louis Treize" enamels, though the majority of them were produced after Louis XIII's death in 1643. About 1640 it became the custom occasionally to model the design in relief with a paste of white enamel, which was afterwards painted with vitreous colours according to nature. Towards the middle of the century the background of the flowers was pierced and cut away, so that every single flower, exquisitely modelled and coloured, stood out by itself. In addition to tulips of every variety, and hyacinths, sunflowers, and roses, all kinds of lilies were in favour, especially the tiger-lily, the "crown imperial," and different species of fritillaries, whose beautifully spotted or chequered blossoms were rendered in their natural colours with striking fidelity. Flowers executed in this realistic style for jewellery were arranged chiefly in garlands and festoons, in the manner of the wreaths painted by Jan Brueghel round several of Rubens' pictures, the flower pieces of such Dutch and Flemish painters as Jan de Heem, Van den Hecke, Daniel Seghers, and Van Thielen, and the wood carvings of Grinling Gibbons (himself Dutch by birth), which display the same remarkable realism. Among the goldsmiths and draughtsmen of the time who have left designs for jewels in painted enamel are the Germans Heinrich Raab and Johann Paulus Hauer, both goldsmiths of Nuremberg. Their engravings, with natural flower ornamentation very finely designed and executed, were published about 1650. They comprise crosses, étuis, scissor, watch, and scent cases, and pendants--star- and bow-shaped, and set each with a pendent pearl. Work in the same direction by the artists of the French school is of great importance. Gédéon Légaré, though he practised the pea-pod style, is the first to show a decided preference for natural flowers in his engravings, which date from about 1640. He is followed by three famous masters of flower ornament--Balthazar Moncornet, Gilles Légaré, and Jean Vauquer. Vauquer worked at Blois between 1670 and 1700, and like many other engravers of jewellers' designs, was a jeweller and enamel painter by profession. He was a pupil of Morlière of Orleans, who also worked at Blois. His fine plates of flowers and ornamental foliage, engraved after his own designs and entitled _Livre de fleurs propres pour orfévres et graveurs_, were published in 1680.[175] Vauquer was an enamel painter of pre-eminent ability, and one of the greatest exponents of the day of the art of representing natural flowers. [175] Reproduced by Quaritch in 1888.