Roberto Coin Signed Blue Topaz 18K Yellow Gold Necklace. ROBERTO COIN 18 STONE NECKLACE: 4DWT 18K-Y/G, 1-CABOCHON CUT BLUE TOPAZ 5.01CTW, 18KT ITALY, ROBERTO COIN IPANEMA NECKLACE. 750 Length: 18.0 Weight: 6.221 grams Color: Yellow. Count: 1 stone(s) Size: 5.01 CTW Quality: Medium. Is an online retailer of gently used and pre-owned jewelry.We have amazing deals on gold, silver, and diamond jewelry. We also have a large selection of designer jewelry and watches. Point of Sale · eCommerce · Mobile. The item "Roberto Coin Signed Blue Topaz 18K Yellow Gold Necklace (DG7005264)" is in sale since Thursday, April 29, 2021. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Necklaces & Pendants\Gemstone". The seller is "shoplyco" and is located in Lewisville, Texas. This item can be shipped to United States.