Founded in Vicenza, the City of Gold in 1977, Roberto Coin jewelry celebrates the elegance of femininity, creativity and craftsmanship. Pres… Founded in Vicenza, the City of Gold in 1977, Roberto Coin jewelry celebrates the elegance of femininity, creativity and craftsmanship. Presented here is a twist link necklace with .28 ct. t.w. of round, bezel-set diamonds. Lobster clasp. 18kt white and yellow gold necklace.