It is not displayed in a museum case or protected behind glass; it simply sits there, incorporated into the fabric of a later structure as though it were any ordinary building stone. The fragment is a grave slab, the kind used to mark burials in the early medieval period, and it carries incised decoration that links it to a tradition of Christian monument-making stretching back well over a thousand years.

What makes this piece particularly interesting is its lunette-shaped terminal, a semicircular decorative element at the end of the cross arm, characteristic of a specific strand of Early Christian stonework found across Ireland. These grave slabs were typically placed flat over a burial or set upright as markers, and the carving on them ranged from simple incised lines to elaborate knotwork and inscriptions. This example, catalogued in Karina Swords's 2009 survey of the area, is now a fragment, meaning the original slab was at some point broken, and only a portion survives. How and when it came to be incorporated into the tower base is not recorded, though the practice of reusing earlier carved stones in later construction was extremely common throughout medieval and post-medieval Ireland. The church structure it now forms part of is recorded under the Sites and Monuments Record reference DU011-034004.

The site is in Swords Glebe, to the south-east of the broader Swords complex in north County Dublin. The fragment is built into the tower base rather than set apart for display, so it requires a close look at ground level to spot the carved surface. Visitors with an interest in early medieval stonework should look carefully at the lower courses of the tower masonry, where the slab is incorporated rather than prominently presented. Access to the immediate area around the church structure will determine how closely the stone can be examined, and it is worth checking local access conditions before making a specific trip.