Antique Engagement Ring Art Deco GIA 1.50 Round Brilliant Cut Diamond in PlatinumThis Art Deco engagement ring has a G. I. A. certified diamond as its focal point. The prong set center diamond is a round brilliant cut that weighs 1. 50 carat. There are also two small accent diamonds on each side of the center diamond. The band has an engraved geometric pattern on the sides as well as the top and bottom. The geometric pattern is trimmed in milgrain detailing which helps to identify this ring as an Art Deco piece.