Colour plays an important part in Egyptian jewellery. This love of colour was displayed in the use of glazed ware, incorrectly termed porcelain, but properly a faience, much employed for all articles, as necklaces, scarabs, and rings, and particularly for the various kinds of amulets which were largely worn as personal ornaments. The most usual and beautiful was the cupreous glaze of a blue or apple-green colour; yellow, violet, red, and white are also met with, but less frequently, and chiefly at later periods. But colour showed itself above all in the surface decoration of jewellery, produced by the application of coloured stones and the imitation of these inserted in cells of gold prepared for them. The chief materials employed for the purpose were lapis-lazuli, turquoise, root of emerald or green felspar, jasper, and obsidian, besides various opaque glasses imitating them. With the exception of enamel upon metal, which is only found in Egypt in quite late periods, the Egyptians appear to have been acquainted with all the processes of jewellery now in use. Chasing and engraving they preferred to all other modes of ornamenting metal-work, as these methods enhanced the beauty of their jewels while retaining a level surface. They were also highly skilled in soldering and in the art of repoussé work. The great malleability of gold enabled them to overlay ornaments of silver, bronze, and even stone with thin leaves of this metal; while ornaments were also composed entirely of plates of gold of extreme thinness. In articles where frequent repetition occurs, for instance, in necklaces, patterns were produced by pressure in moulds, and then soldered together. Examples of jewellery furnished by the Egyptian tombs are to be found in the museums of almost every country. Undoubtedly the finest collection is in the Viceregal Museum of Egyptian Antiquities at Cairo. It contains jewels of the earliest dynasties, very few of which are to be found outside it. Dating from the great Theban dynasties, the eighteenth and nineteenth, when the jeweller's art reached its highest level, are many beautiful examples, notably the famous set of jewels discovered in the tomb of Queen [.A][=a]h-[h.]etep (1600 B.C.). Fine collections are also preserved in the British Museum, in Berlin, Munich, and in the Louvre. Following the sequence of ornaments from the head downwards, mention must first be made of diadems or frontlets. These were composed either of ring ornaments, set with precious stones and strung in a variety of ways, which hung down over the temples, or of gold bands ornamented in cloisonné inlay with the favourite allegorical representations of animals in various arrangements. In the case of royal personages there is a uræus in front.