It is only the upper left portion of what was once a much larger graveslab, possibly the lid of an altar tomb, measuring just over a metre in length and less than half a metre wide. What survives is enough, however, to suggest that the original piece was worked with considerable care: a seven-armed interlace banded cross, its arms terminating in fleur-de-lis, with a three-bar knop sitting at the base of the cross head. Along the upper broad border, raised letters in Black Letter script, the angular Gothic hand favoured for formal and funerary inscriptions throughout medieval Europe, carry the remains of a Latin text.

The inscription is fragmentary, but a version of it was recorded in a publication from 1818, the Memoir of the Family of Grace, and it points toward a specific person and a specific moment: someone of the place called Coraghmor, who died on the feast of the Nativity of the Virgin Mary in the year 1513. The feast falls on the eighth of September, which gives the death a precision that the damaged stone itself can no longer supply. The historian William Carrigan, writing in 1905, identified this as one of the funerary monuments then associated with Tullaroan, connecting the slab to a local family of evident standing. An altar tomb, the type this stone may once have capped, was a substantial commission: a raised chest tomb, often freestanding within a church, marking someone of considerable local consequence. That only a corner survives, lying quietly against a wall, gives the fragment a slightly melancholy quality that the intricacy of its carving does nothing to dispel.