This show-stopping brightly polished platinum sapphire and diamond anniversary cocktail ring features an oval cut 11.31 carat oval cut deep blue sapphire that is prong set in the center and is surrounded by a total of 1.94 carats of round brilliant cut diamonds that are prong set around it and down on the sides of the ultra-slim band in a gorgeous cascade of brilliance and fire. Sapphire is the birthstone for September which makes this spectacular ring the ultimate birthday gift.