DIAMOND RUBY ENGAGEMENT RING OLD TRANSITIONAL CUT VINTAGE STYLE HALO WHITE GOLDWhy we love it: This gorgeous diamond and ruby ring features a vibrant 0. 71ct old transitional cut diamond set at the center of an elegant Art Deco style design. The diamond is accented by a rich red border of calibre cut rubies and vibrant diamonds. Highlights: 0. 71 carat old transitional cut diamond center Original vintage diamond cut during the Retro era Nicely white and completely eye clean with grades of J SI1 SI2 Calibre cut natural rubies 0.