Like cloisonné enamelling, plique-à-jour begins with a lattice of thin metal bands. The cloisons 
between the metal bands are filled with transparent enamels, but, unlike cloisonné, there is no metal backing. When completed a plique-à-jour jewel transmits sunlight like a miniature stained glass window. Particularly stunning examples of plique-à-jour work were created by Russian masters during the mid-1800’s and the jewelers of the Art Nouveau period.
The above brilliant light green of Schlumberger’s paillonné enamel is exceptional. Bracelet in 18k gold with light green enamel. $27,000
The middle brilliant rose of Schlumberger’s paillonné enamel is exceptional. Bracelet in 18k gold with rose enamel. $22,000
The below brilliant red of Schlumberger’s paillonné enamel is exceptional. Bracelet in 18k gold with red enamel and diamonds. $44,000
metal surface. (Remember the toy Spirograph, that was engine turning with paper and pencil). In guilloché enamelling an engine-turned surface is painted with a translucent enamel. The color of the enamel pools and collects in the engraved lines, heightening the pattern and giving it depth and a sculpture-like appearance. Some of the finest examples of guilloché enamelling were produced in the workshops of the Russian jeweler Karl Fabergé. Beautiful examples of engine turning can also be found on many Victorian jewels and pocket watches.