The surface of the shell shows coarse, low, unequal spiral cords and broad wave-like undulations.

The four open perforations are situated in high tubercles upon a strong dorsal angle, below which the left side slopes steeply to the columellar margin.

Inside there are shallow spiral sulci and indentations at the positions of the cords and waves of the exterior.

The nacre is light colored or silvery, to a high degree iridescent, reflections of emerald green and red predominating.

The muscle attachment is smooth, but its posterior and lateral outlines are marked by a rugose line.