Tiffany & Co. 18K Yellow Gold 11 Strand White Akoya Pearl Necklace Consign Now DeptJewelrySizeLength 17 ½ in. Tiffany & Co. 18K Yellow Gold 11 Strand White Akoya Pearl Necklace, Beautifully Matched and Excellent Luster The Pearls Range in Size from 1 mm – 6 mm Length 17 ½ in. Please note that this auction has ended. Click here for an overview of this auction.