Mikimoto 18ct White Gold Diamond White South Sea Pearl Pendant, PPL 404NDW. 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. 10-11mm White South Sea cultured pearl with 0.24ct of diamonds, set in 18ct white gold. The chain is 45cm long and can be adjusted to 40cm. The necklace will arrive beautifully packaged in a unique Mikimoto presentation box with certificate of authenticity.