This ancient monolith measures approximately 1.8 metres in height, with a width of 0.57 metres and a maximum thickness of 0.43 metres, oriented along an east-west axis. The stone stands on relatively level terrain, a silent sentinel that has watched over this landscape for millennia.

Historical records suggest this wasn't always a lone monument. The third edition of the Ordnance Survey 6-inch map documented two stones at this location, though today only one remains visible. Whether its companion fell victim to agricultural clearance, was relocated for building purposes, or simply succumbed to the elements over time remains unknown. Such losses aren't uncommon across Ireland's archaeological landscape, where countless prehistoric monuments have disappeared or been altered through the centuries.

The Gransha standing stone forms part of Donegal's rich prehistoric heritage, documented comprehensively in the Archaeological Survey of County Donegal, which catalogues field antiquities spanning from the Mesolithic period through to the 17th century. These standing stones, erected during the Bronze Age or possibly earlier, likely served multiple purposes; as territorial markers, commemorative monuments, or perhaps as part of ritual or astronomical alignments. Their true significance remains tantalisingly elusive, adding to the mystery that surrounds these enigmatic markers scattered across the Irish countryside.