Mikimoto M Collection 18ct White Gold White Akoya Pearl Stud Earrings, PE 1722 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. 6.25mm Akoya cultured pearls, set in 18ct white gold. The earrings will arrive beautifully packaged in a unique Mikimoto presentation box with certificate of authenticity.