Is large, thick and conical spiral. Upper part of the shell layer consists of 3 to 4 pores that made from protruding granular. Upper part of the sutures and lower part of the layer have one rough protruding tuberculate. Shell is in grey-white color, with patterns in purple-red flaming type. The base is flat but slope, outer part is simple, while inner is thick, distort into S shape, and dimple horny.