Hanadama Akoya pearls are the finest akoya pearls produced in the world today. We guarantee our hanadama akoya to be the best in the world and the finest akoya pearls available. Akoya Hanadama pearls can be marketed as Hanadama only after being tested in Japan testing laboratories. The most respected laboratory that conducts this test is known as the Pearl Science Laboratory of Japan. At the laboratory, technicians examine and grade the average nacre thickness, and they evaluate the luster and surface quality. A base minimum of excellence in each factor is required to achieve the grading level of Hanadama. Hanadama pearls are delivered with the certificate provided by the Pearl Science Laboratory of Japan. The certification is done in Japan and will take approximately 2-3 weeks, so this is the expected delay for delivery of these wonderful pearl gems.