EXCLUSIVELY AT NEIMAN MARCUS Roberto Coin bracelet from the ROCK & DIAMONDS Collection. 18-karat white gold. Pyramid studs trim outer edges. Allover pavé white diamonds. 3. 63 total diamond carat weight. Roberto Coin signature hidden 0. 3-carat ruby. Approx. 2. 5"D; 0. 6"H. Hidden hinge clasp. Made in Italy.