Plique-a-jour enamel jewellery – one of the most sophisticated and complex art of vitreous enamelling technique. The technique of the Byzantine Empire of 6th century was revived in the late 19th century, by the movement of revivalist jewellery, and became especially popular in Russia. Works by legendary jewelers, such as Pavel Ovchinikov, Ivan Khlebnikov, and some other masters working for Faberge are real masterpieces of plique-a-jour. This filigree technique enables light to shine through the enamel like stained-glass. Russian masters predominately worked with tableware. Precious artistic tableware, decorative and applied art from the stained glass enamels always considered the top jewellery.