Light, radiance and style. Jewelry crafted in gold vermeil and diamond pavé you can combine with all our icons for a magnetic, elegant look. Nocturne, the touch of light you need. TOUS Nocturne bar necklace in silver vermeil with 0.29 ct mix color single-cut diamonds. Bar size: 4 cm. Necklace length: 43 cm. Vermeil is a layer of 18kt gold on sterling silver with a minimum thickness of 2.5 microns, with no other material between them.