The birthstone of September the Natural Sapphire made for a princess. This rare stone is 13.28 ct. certified. and surrounded by 7,10 ct. of the finest Diamonds – made for a princess. Happy Birthday. Rare! 13.28ct Natural Sapphire Certificate Nr. F5G26186 7.10ct Diamonds F color VVs1 ring in White Gold 750 18Kt.