Beautiful antique engagement ring Art Deco diamond in platinum.  This antique platinum and diamond engagement ring features a .67 carat old mine cut round diamond.  The center diamond is set in split prongs commonly known as a fish tail setting.  The center diamond is flanked by two (2) .04 carat full cut round diamonds bead set in decorative square bezels with a total weight of .08 carats.  The platinum band tapers into a smooth half round shank with a high polish.  The interior of the shank is hallmarked 900 PLAT 100 IRID indicating that it is platinum.