Here is a Fine Simon G Platinum Diamond Mounting Wedding Set.  Made from Solid Platinum 950 and weighs 13.6 grams.  It holds .63Ct of Natural Round Brilliant Diamonds that are G Color VS Clarity. Set is currently a size 4.75 which can be sized for FREE Upon request ( Please ask for sizing prior to purchase ).  Hallmarked Simon G, Platin 900.  Excellent Condition Set.  At the center you can fit a Marquise shape stone that is 10.5mm x 6mm