It is only part of a once larger stone, tapering in the manner typical of medieval funerary slabs, and what remains measures just over a metre and a half in length. The carving on its surface is restrained but carefully executed: a two-line shaft of a cross descending to a D-shaped terminal, which is decorated with a floral motif, specifically half a rosette or palmette, a form drawn from classical ornament that found its way into medieval Irish stonework.

The slab was noted by Crawford in 1913 and later catalogued by Higgins in 1987, who placed it within a broader survey of such monuments. Its survival is somewhat fortunate given its exposed setting. The sacristy in which it sits belongs to Clonfert Cathedral, a site with deep early medieval roots in east County Galway. The cathedral itself is perhaps best known for its elaborately carved Romanesque doorway, but the graveslab in the sacristy represents a quieter kind of evidence, the kind that accumulates in corners rather than commanding attention. A recumbent graveslab of this type would originally have lain flat over a burial, marking a grave with both the person's status and the Christian symbolism of the cross. The survival of even a portion, with its incised decoration still legible, gives some sense of the craft that once accompanied commemoration of the dead in a place like this.