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 "Amorino" collection, these sophisticated heart earrings shine in buttery 18kt yellow gold with a stylish split design sparked on one side with round brilliant-cut diamonds. Made in Italy. Post/clutch, Roberto Coin diamond heart earrings.