In 1893 Kokichi Mikimoto produces the worlds first cultured pearls. The gem quality Mikimoto pearls represent the top 5% of the pearl harvest. They are all natural color. These pearls are not to be confused with Mikimoto's lower grade lines such a Blue Lagoon or Sea magic. Mikimoto's grading system does not transfere to other brands. The Mikimoto grades are A, A+, AA and AAA. There is a subctagory in each as 0 or 1. 1 has very slight blemishes(our most popular grade). AAA is exceptional mirror like reflection. AA Superb, clear reflection. A+ Very good clear reflection, A Good clear reflection (our most populare grade...far better than most pearls).