including a ring set with a rectangular-shaped cushion-cut sapphire weighing approximately 2.25cts and accented by round diamonds weighing approximately 1.00ct, together with a ring set in the center with a rectangular-shaped step-cut blue topaz weighing approximately 15.00cts and accented by round sapphires weighing approximately 0.85ct, mounted in platinum and 14k gold, sized 7 1/2 and 4 3/4