1.63 Art Deco Diamond Sapphire Engagement in Platinum.  This Art Deco engagement ring features a 1.63 carat old European cut diamond in platinum. The center stone has a faint champagne color and intricate facets that glitter in the light. The center diamond is prong set and accented by two .20 carat synthetic sapphires. Synthetic sapphires were quite common during the period.  From the profile, beautiful engraved metal work decorates the platinum band in true Art Deco style. This vintage engagement ring reaches 6.46mm above the finger and weighs a total of 3.4 grams.