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 Flower" collection, this gorgeous lariat necklace adjusts up to 21" by sliding the superb .25 ct. t.w. diamond-studded flower centerpiece. Finely crafted in polished 18kt white and yellow gold. Cable chain. Made in Italy. Lobster clasp, Roberto Coin diamond lariat necklace.