Vintage Engagement Ring Mid-Century .79 Round Brilliant Cut Diamond in 14k Yellow GoldA look still worn today, this Mid Century three stone style ring is just as classic today as it was when this ring was made. A . 79 carat round brilliant cut diamond is flanked on each side by a . 26 carat diamond. Simple and sleek, this ring has a little flair where a straight line of gold is recessed down the shank.