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, these festive 18kt rose gold flower earrings dazzle with .12 ct. t.w. round brilliant-cut diamonds and colorful quartets of citrine, pink rubellite, tanzanite and blue topaz rounds. Made in Italy. Post/clutch, Roberto Coin diamond flower earrings.