Tiffany & Co. Love Knot 18k Yellow Gold Cufflink & Tie Tack Pin Set. A pair of cufflinks and tie tack from Tiffany & Co. Well crafted from solid 18k yellow gold with a fine polished finish, this beautiful set boast a solid love know design, the top stud is larger then the tie tack size. Very elegant and sophisticated designer pair, add it now to your fine jewelry collection, it is fuly signed by the designer with the metal content. Material: Solid 18k yellow gold. Hallmark: Tiffany & Co. 750 (18k) Measurements: Cufflinks top: 10mm Tie Tack Pin: 8mm Weight: 13.6 grams Stock#: 50867