Solid shell up to 4.5cm in length. Light yellow, orange, pink or fawn - sometimes banded. The inside of the shell is orange, tending to be lighter towards the edges. The shell surface is sculptured with concentric ridges with the left valve smoother than right. Cruciform muscle scars sometimes distinct.

Solid shell up to 9cm in length. The colour is very variable and includes white, red, pink, brown, orange, yellow and purple and shades between these. In addition, the valves are often patterned with various combination of these. The surface of the shell is sculptured with rounded ribs which are corregated.

Shell up to 90mm lomg, 90mm high, 70mm wide, juveniles round, adults roundish, becoming slightly produced posteriorly and with a slight keel, not produced anteriorly.

Up to 60mm long, 60mm high, 45mm across, adults plump and round, perhaps a little produced posteriorly but not keeled. About 20 strong radial ribs, fewer in juveniles.

Shell up to 100mm long, 90mm high, 85mm across, juvenile shells round or oval, noticeably longer than high, larger shells becoming plumper and more rhombic with age, developing an angulation or kee

Brittle shell up to about 1cm in length. Dirty white in colour and appears iridescent. The surface is sculptured with fine concentric rings. Has a deep pallial sinus which is partially confluent with the pallial line.

Shell up to about 2.5 cm in length. Outside and inside of shell white. Semi transparent and polished. Sculptured with very fine concentric rings. Deep pallial sinus which is partially confluent with the pallial line.

Shell up to just over 1cm long. Glossy, pearl white and sometimes translucent. Sculpture - fine concentric rings. Interior of shell translucent and glossy. Deep pallial sinus which is partially confluent with the pallial line.

Brittle shell up to about 2cm in length. Interior and exterior of shell white and polished. Sculpture of fine concentric rings. Deep pallial sinus which is partially confluent with the pallial line.

Fragile shell up to 3mm in length. It is coloured dirty white with a red tint both inside and outside. The surface of the shell is sculptured with concentric and raditaing lines.