Roberto Coin 18k Yellow Gold Necklace 156278AY1800. ShopWorn® Roberto Coin 18k Yellow Gold Necklace.The item "Roberto Coin 18k Yellow Gold Necklace 156278AY1800" is in sale since Monday, June 25, 2018. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Necklaces & Pendants\Precious Metal without Stones". The seller is "shopworn" and is located in Cresskill, New Jersey. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.