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 ring in silver vermeil with 0.34 ct mix color single-cut diamonds. Ring size: 1.5 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.