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