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 Flower" collection, these fanciful flower earrings promise to add a lovely touch to your everyday ensembles. Sparkling with .32 ct. t.w. round brilliant-cut diamonds in open-space arabesque shapes set in 18kt yellow gold. Made in Italy. Post/clutch, Roberto Coin diamond earrings.