Mikimoto 18ct Yellow Gold Eighteen 5mm White Pearl Necklace. PPL 129 K. 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 eighteen exquisite white Akoya cultured pearls 5mm in size which sit gracefully on an 18ct yellow gold chain. The necklace is completed with a bolt ring fastening for easy wear and would be a beautiful addition to any jewellery lovers collection. The necklace comes beautifully packaged in a unique Mikimoto presentation box with certificate of authenticity.