The Swiss brand is one of the few artisanal ateliers that know how to use this challenging technique which first appeared 1500 years.
Different to the art of cloisonné or champlevé, the plique-à-jour (smalta clara in Latin) consists of applying the enamel to bottomless molds. The result can be compared to a miniature stained-glass window.
After creating white gold partitions of different shapes and sizes, the empty spaces are filled with different colours of enamel, then undergoing several successive firings, each of them contributing to achieve the desired colour and transparency.
The motif used for this timepiece is a hummingbird crafted in seven different gradients of green.
The dial layout of the Petite Heure Minute, with its off-centered white mother-of-pearl dial at 2 o’clock, is ideal to leave the hummingbird a large space.
Housed in a 35 mm x 10.83 mm case crafted from red gold and set with 100 diamonds (0.89 carat), the Jaquet Droz 6150 calibre is equipped with silicon balance spring and pallet horns as well as a platinum oscillating weight with 18-karat red gold applique. Beating at the frequency of 3 Hz (21,600 vibrations per hour), this self-winding movement has a power reserve of 38 hours.
Completed by a hand-embroidered green satin strap, the Jaquet Droz Petite Heure Minute Smalta Clara Hummingbird ref. J005503502 is a “numerus clausus” limited edition of only eight pieces. jaquetdroz.com