Fine 12.3mm x 15.5mm White South Sea Graduated Pearl Necklace Consign Now DeptJewelrySizeLength 17 in. Fine 12.3mm x 15.5mm White South Sea Graduated Pearl Necklace, 31 pearls total, with 14k white gold and diamond clasp. Length 17 in. Please note that this auction has ended. Click here for an overview of this auction.