18K white gold with a center rectangular cut emerald, approx. 8.2mm x 6.0mm (approximate carat size 1.75 ct), surrounded by a geometric and ribbon design with accent diamonds: 18 single cuts, 1 baguette and 1 full cut, ring size 7-1/2, 3.8 dwtUpon further inspection, it does appear that there is a crack in the stone; however, it is difficult to tell how far it goes or if it is perhaps a superficial scratch that is deep enough to appear to be a crack.