The fragment was possibly a bullaun stone, a type of basin-hollowed boulder found at early Christian and prehistoric sites across Ireland, often associated with ritual use, healing water, or cursing traditions. Its loss is quietly telling: a small, easily overlooked object that once marked something meaningful, now gone.

The standing stone from which it came projects from the outer face of an enclosure at Killoluaig that is, in itself, a remarkably dense accumulation of early Christian remains. The enclosure is oval-shaped and sits within a roughly rectangular area bounded by modern field walls. Inside are a leacht, which is a low cairn-like stone monument associated with early Irish devotion, a gable-shrine, a holed stone, and numerous uninscribed grave-markers. Together these features identify the site as a ceallúnach, an unenclosed or informally managed burial ground that functioned outside the usual parish church system, often used for unbaptised infants or others excluded from consecrated ground. A pillar stone has been incorporated into the southern face of the enclosing element, suggesting the site drew on, or deliberately incorporated, older standing monuments. A second ceallúnach lies a short distance to the east, hinting at a landscape that was, for a long period, unusually thick with informal sacred use.

What was recorded by Frances Henry in 1957 as still being within local memory has since become a matter of archaeological speculation rather than observation. The bullaun fragment is no longer reported at the site, and whether it survives elsewhere, was removed, or simply disintegrated is unknown. What remains at Killoluaig is the standing stone, the enclosure, and the quiet, accumulative strangeness of a place that kept acquiring monuments across many centuries without ever quite becoming official.