Founded in Vicenza, the City of Gold in 1977, Roberto Coin jewelry celebrates the elegance of femininity, creativity and craftsmanship. Thes… Founded in Vicenza, the City of Gold in 1977, Roberto Coin jewelry celebrates the elegance of femininity, creativity and craftsmanship. These beautifully feminine flower earrings light up your look with .33 ct. t.w. round brilliant-cut diamonds outlining pretty petals. Crafted in polished 18kt yellow gold. Made in Italy. Post/clutch, Roberto Coin diamond flower earrings.