À jour

from the Antique Jewelry University

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Guilloché enamled box with a plique à jour rosette in the lid
Guilloché enamled box with a plique à jour rosette in the lid


À jour (from French: jour = day) is a term used to describe openworked backgrounds, either by sawing or piercing. À jour settings for gemstones became popular around 1800. In enamelling the term plique à jour is used to describe an item with an open background which is filled with transparent enamel. This creates a myriad of colors when held to the light.


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