Clarke (1981) provides the following description for this species:
shell up to 140mm long, 70mm high, 55mm wide and up to 12mm thick near pallial line.
elliptical, expanded in females (but not in males) in the posterior part of the ventral margin, heavy, strong and inflated.
low and projecting only a little above hinge line; cavities shallow; sculpture rather coarse and consisting of numerous concentric bars with a shallow central sinuation or are centrally broken.
yellowish, greenish or brownish, shiny, and in most specimens covered by extensive, sharply defined, narrow rays.
well developed and fairly strong; pseudocardinal teeth medium in size, erect, serrated, compressed, directed forward, 2 in each valve; lateral teeth narrow, prominent, straight or slightly curved, 1 in the right valve and 2 in the left.
white or bluish white and iridescent posteriorly.