1. Material: MOP (mother of pearl) 2. Size: less than 50 mm 3 ... 20,000 pcs/month(each style) Product Information-------------------------------------------------------------------------------1. Material: MOP--mother of pearl: river shell, white sea shell, black sea ... and shell craft. Such as necklace, earrings, wrist watch dial(MOP), shell button, shell mosaic, picture frame, lamp decorations, jewelry ...