Mikimoto 18ct yellow gold akoya pearl branch ringmkm 516 this beautiful 18ct yellow gold akoya pearl ring is elegantin design it features two 4mm and two 45mm genuine mikimoto akoya pearls on an 18ct yellow gold branch design band over a century ago kokichi mikimoto succeeded in creating the worlds 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 mikimoto 18ct yellow gold akoya