Mikimoto Starry Night 18ct Rose Gold 0.09ct Diamond Akoya Pearl Ring. PRH 5470D Z. 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 exquisite Mikimoto ring features white Akoya pearls 5.25-6.75mm in size in an intricate, eye-catching starry night sky design. The ring is embellished with 0.09ct round brilliant cut diamonds adding a luxurious sparkle and mounted in 18ct rose gold. This elegant ring would be a beautiful addition to any jewellery lovers collection. The ring comes beautifully packaged in a unique Mikimoto presentation box with certificate of authenticity.