Founded in Vicenza, the City of Gold in 1977, Roberto Coin jewelry celebrates the elegance of femininity, creativity and craftsmanship. From… Founded in Vicenza, the City of Gold in 1977, Roberto Coin jewelry celebrates the elegance of femininity, creativity and craftsmanship. From the "Princess" collection, this stunning religious necklace features a contemporary cross sparked by .35 ct. t.w. baguette and round brilliant-cut diamonds. Crafted in polished 18kt white gold. Cable chain includes a 2" extender and lobster clasp. Made in Italy. Roberto Coin diamond cross necklace.