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 "Tiny Treasures" collection, this 18kt yellow gold fleur-de-lis necklace is a simple and sophisticated ode to regality with French roots. Suspends from a cable chain with a 2" extender. Lobster clasp, Roberto Coin 18kt yellow gold fleur-de-lis necklace.