Mikimoto 18ct White Gold Diamond Black South Sea Pearl Cascading Necklace, PP 20182BD W. Over a century ago, Kokichi Mikimoto succeeded in creating the world\'s first cultured pearl. His quest for perfection and his love for these pure, lustrous gems of the sea were the guiding forces that built the house of Mikimoto. This elegant Mikimoto necklace features five white 4-5.5mm Akoya cultured pearls which cascade gracefully along an 18ct white gold chain, completed with an exquisite 9.5mm Black A+ South Sea pearl. The necklace is further embellished with a round brilliant cut 0.04ct diamond adding a luxurious sparkle to the piece. The necklace comes beautifully packaged in a unique Mikimoto presentation box with certificate of authenticity.