Since the 1930's, Akoya pearls are the world's best-known pearl. Akoya pearls are often very round and spherical in shape and are complemented by very high luster. Produced by a small oyster called the Pinctada Fucata off the seas of Japan and China, they are commonly found in sizes ranging from 2mm to 10mm in size. Akoya pearls are a long-time favorite in the pearl industry and are commonly worn by brides on their wedding day.