approx 12 gr platinum with 1.4 ct f vs side diamonds .. vintage setting in great condition size 5.5 and totally sizeable.. I had it set with an emerald 9.5 by 7.5 can accomadate many head styles, originally held a 9.5 mm round. If you need to change the head you can use the platinum and have a gorgeous setting, retail is over 6 grand.