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 "Carnevale" collection, this eye-catching necklace dazzles with .18 ct. t.w. round brilliant-cut diamonds and .10 ct. t.w. round pink rubellites in polished 18kt yellow gold. Rolo chain includes a 2" extender. Made in Italy. Lobster clasp, Roberto Coin pink rubellite and diamond necklace.