Antique Engagement Ring Art Deco .70 Round Brilliant Cut Diamond in PlatinumThis platinum, Art Deco Era ring has such a modern feel you might even mistake it for that! The center diamond is a . 70ct Round Brilliant Cut with G color and SI1 clarity. On each side of the center diamond are three (3) diamonds which taper in size down the shank and are channel set. With clean lines and a high polish this ring is a real stunner.