TOUS Nocturne earcuff with three spirals, in silver vermeil with 0.15 ct mix color single-cut diamonds and dark silver. Size of spirals: 1.5-1-0.8 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. (Dark Silver: Sterling silver covered with a layer of ruthenium, a mineral that gives strength and shine.)