Here is a Fine Tiffany & Co 18Kt Diamond Sapphire Pin / Brooch.  Made from Solid 18Kt Yellow Gold and weighs 17 grams.  It holds .15Ct of Natural Round Brilliant Diamonds F-G Color VS Clarity , and 0.40Ct of Natural Gem Sapphire.  The Pin / Brooch is 2 inches tall and 1 1/4 inch wide.  Hallmarked Tiffany & Co , 18kt, Italy.  This is a Vintage piece that has been kept in excellent condition.  Comes in a nice Jewelry Box.