Solid shell up to 10cm from beak to margin. The shell is yellow, pale green or brown in colour sometimes with pink or purple markings. The upper valve is sculptured with concentric lines and grooves which are sometimes lifted into scales. Radiating ribs are also present.
- The muscle scar is white
- The shell margins near the beak are crenulated
Found on almost any suitable stable bottom including mud, sand, gravel and rocks.