Blue Sapphire & 7mm-11mm Graduated White Cultured Pearl Necklace Consign Now DeptJewelrySizeLength 38 in. Blue Sapphire and 7mm-11mm Graduated White Cultured Pearl Necklace, 60 sapphires, a total of 39 carats, with 18k white gold links and clasp. Length 38 in. Please note that this auction has ended. Click here for an overview of this auction.