Hanadama akoya pearls are pearls separated from every harvest in Japan and treated as an individual quality grade. These are the finest pearls from each harvest. Hanadama pearls are submitted to the Pearls Science Laboratory of Japan for grading analysis. If they pass the stringent quality criteria, they are then certified as hanadama - the best akoya pearls in the world. All hanadama strands and earrings we offer will be accompanied by the individual, numbered certificate from the Pearl Science Laboratory of Japan.