Mikimoto has set the style standard since 1893, when our founder Kokichi Mikimoto successfully created the world's first cultured pearls. Ever since then, Mikimoto has become synonymous with luxury, harnessing the allure of pearls into inimitable expressions of beauty for over 130 years. 11.9x9.0 mm Black South Sea cultured pearl necklace with 18k white gold and diamond Mikimoto ball clasp.