It measures roughly 36 centimetres long and 29 centimetres wide, not much larger than a hardback book, yet it preserves decorative stonework of considerable delicacy. The fragment is part of a cusped trefoil surround, the kind of ornamental framing used in medieval ecclesiastical architecture for arched windows or a piscina, which is the shallow stone basin set into a church wall for rinsing the chalice and the priest's hands during Mass. Where the cusps meet to form pointed spandrels, the mason carved vegetal decoration, coiling plant forms that fill the spaces with the controlled organic energy typical of Gothic ecclesiastical carving.

The fragment originates from Leggetsrath in County Kilkenny, a townland that takes its name from the Norman-Irish surname Leggett combined with the Irish word rath, referring to a ringfort. Kilkenny as a county was heavily shaped by Anglo-Norman settlement from the late twelfth century onward, and the quality of medieval stone carving found across the region reflects the wealth and ambition of both ecclesiastical and secular patrons during that period. A piece of this kind, with its cusped trefoil form and careful vegetal ornament, would have belonged to a building of some pretension, most likely a church or chapel, though without further context it is impossible to say more about the structure it once adorned. Now held in the OPW depot under catalogue reference KD044, the fragment exists at a slight remove from the ground it came from, preserved but displaced, a piece of ornamental grammar separated from the sentence it once completed.