It is not a structural piece; it was never meant to be a building block. It is part of a graveslab, broken off from its original form and pressed into service when a section of the wall was rebuilt in ashlar, a term for cut and dressed stone laid in regular courses. The fact that it ended up here at all is a small, quiet accident of recycling and necessity.

The fragment measures roughly 45 centimetres by 30 centimetres and comes from the upper portion of what would once have been a full memorial slab. What survives is decorative: two fleur-de-lys terminals belonging to a segmental-headed cross, carved in false relief, meaning the design is achieved by cutting away the background to leave the motif raised, rather than cutting into the stone itself. The fleur-de-lys, a stylised lily form long associated with devotional and heraldic imagery, was a common ornamental choice on medieval Irish graveslabs, and the segmental-headed cross, with its arched rather than straight-sided head, appears across Kilkenny and the surrounding counties. The original slab would have marked someone's burial, probably within the friary church itself, though any inscription or identifying detail is long gone with the missing portions.