Art Deco Star Sapphire w/ Sapphire Halo Ring in Platinum.  This Art Deco cocktail ring features a 4.65 carat cabochon cut star sapphire with a halo of French cut sapphires weighing .44 carats and is set in platinum. There are small round diamonds set in the shoulders which add a bit of extra sparkle. The lustrous milky blue star sapphire is neatly bezel set with fine milgrain detail and the accent sapphires are channel set with another row of milgrain on their outer edge.