This finely designed brooch features one cabochon sapphire, measuring 8.00 mm in diameter, weighing approximately 3.50 carats, the openwork brooch is decorated by 90 round brilliant cut diamonds, weighing a total of 1.00 carat, SI clarity, G to H color, enhanced by millgraining, measuring 2 3/4 x 1 1/2 inches, weighing 17.20 grams.