Founded in Vicenza, the City of Gold in 1977, Roberto Coin jewelry celebrates the elegance of femininity, creativity and craftsmanship. This… Founded in Vicenza, the City of Gold in 1977, Roberto Coin jewelry celebrates the elegance of femininity, creativity and craftsmanship. This "Venetian Princess" necklace presents a classic clover centered by a beautiful .40 carat flower-shaped carved amethyst with .17 ct. t.w. round brilliant-cut diamonds all around. Finely crafted in polished 18kt rose gold. Rolo chain includes a 2" extender. Made in Italy. Lobster clasp, Roberto Coin diamond and amethyst flower necklace.