No certification. 1.60 Ct old european cut diamond. I know the girdle is abraided some, very minute, they have been noted by a jeweler when the stone was placed under a gem scope and I am told this is common in the old cuts. The cut is real nice, and the facets appear as inverted hearts or petals of a flower around the open culet. The culet is not big as it seems in the old mine cuts and the stone is not chunky, it has proportionate lines like that of a modern brilliant.