Here is a Fine Tiffany & Co Platinum Round Diamond Solitaire Ring.  Made from Solid Platinum 950 and weighs 4.8 grams.  It holds one Natural Round Brilliant Diamond in the center that is a 0.90Ct G Color VS1 Clarity, GORGEOUS STONE.  The ring is currently a size 6 which can be sized for FREE Upon request, ( please ask for sizing prior of purchase).  Hallmarked Tiffany & Co, PT950, 18028743, 0.90Ct.  This Ring Comes with a Tiffany & Co Diamond Certificate, Inner & Outer Ring Box, & Tiffany & Co Receipt.  The ring was sent to Tiffany & Co in New York and was polished , LOOKS BRAND NEW!!  Retail price $12,500 +Tax!