This is a beautiful art deco style ring set with a .28 carat old mine cut diamond in platinum. The ring is hallmarked .28 for carat weight and 950 for platinum. Center diamond I color SI-2 clarity. There are 28 additional round diamonds H color VS-2 clarity. The 22 natural sapphires are natural blue gem quality custom French cuts. Total gem weight 2.50 carats. Ring Size 7 ¾, Weight 5.1 grams, width at face of the ring 19mm.