Mikimoto Precious Heart 18ct White Gold White Akoya Pearl Necklace, PP 20320 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 Mikimoto necklace, from the Precious Heart collection, features two exquisite white Akoya cultured pearls, ranging from 4.45-6.75mm in size. The pearls are complimented with an 18ct white gold heart accent and the pendant is completed with an 18ct white gold chain.  This necklace come beautifully packaged in a unique Mikimoto presentation box with certificate of authenticity.