A GIA certified 3.78 carat purple/pink unheated oval sapphire is four prong mounted, with diamonds at the points of the compass, and down each side of the shank for 9mm. Open areas of the two tier head are enameled black reminiscent of the Art Deco period. Approximately .17 carat of VS1/VS2 G/H color diamonds. Item weighs 3.8 grams. Refer to GIA and AIGL reports for details.