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" collection, this stunning flower necklace features 18kt yellow gold petals with diamonds set in 18kt white gold in the center. Suspends from a rolo chain with a 2" extender. Includes a hidden Roberto Coin signature inside: a tiny gemstone as a secret gift of good wishes to every woman wearing it. Made in Italy. Lobster clasp, Roberto Coin diamond flower necklace.