Beautiful Antique Art Deco 18k Yellow Gold Platinum Diamond Cufflinks. The cufflinks have a unique design with a platinum top and diamonds. The diamonds in the center of the cufflinks are old mine cuts that measure .12 carat total and are I color VS-2 clarity. Enhancing the cufflinks are 12 old rose cut diamonds on the border. The cufflinks are marked 18k and the backs are done in yellow gold. The cufflinks are in excellent condition and weight 5.9 grams. They measure 1 inch long, and the face of the cufflinks measures 13mm by 13mm.