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 "Principessa" collection, this 18kt yellow gold flower station necklace sparkles with two round brilliant-cut diamonds on a rolo chain with a 2" extender. Made in Italy. Lobster clasp, Roberto Coin diamond floral station necklace.