... , Akoya, Agoya, Banana, Black/Brown/White Mother of Pearl (MOP), Mussel, Paua, River, Trocas, Trocas, TrochusButtons StylesHoles, Self-shank, Brass eyelets ... (Mother of Pearl) Shell Buttons; >Mississippi River Shell Buttons (American); >Mussel Shell Buttons; >Green Paua (Abalone) Shell Buttons (New Zealand); >River ...