From the Tiny Treasures Collection. Roberto Coin's diamond pendant features a sparkling halo of diamonds set in 18K white gold, suspended from a delicate chain and finished with a signature hidden ruby. Diamonds, 0.28 tcw Ruby 18K white gold Lobster clasp Made in Italy SIZE Chain: about 18"L ABOUT THE BRAND Jewelry designer Roberto Coin founded his eponymous line in 1996, with a strong emphasis on elegance and creative experimentation. Each piece is the result of a long creative process, taking inspiration from cultural influences and nature. Fine Jewelry - Roberto Coin Asset > Roberto Coin > Saks Fifth Avenue. Roberto Coin. Color: White Gold.