... Akoya, Agoya, Banana, Black/Brown/White Mother of Pearl (MOP), Mussel, Paua, River, Trocas, Trocas, TrochusButtons StylesHoles, ... .5mm thick; self-shank trocas or white MOP shell buttons, the thickness may reach 7. ... Trochus Shell Buttons; >White / White lip (Yellow/Gold) MOP (Mother of Pearl) Shell ButtonsPackaging Details1. PE bags; shell ... , button for garment,resin button,plastic button,buckle