.55 Art Deco Diamond Engagement Ring in 18K White Gold.  This structured Art Deco engagement ring features .97 carats of diamonds finished in shimmering 18 karat white gold. The center stone is a .55 carat Old European cut diamond. Prong set in a square mounting, the center diamond is accented by fourteen (14) .03 carat sparkling diamonds. The head of the ring has a unique, step design in white gold, with diamonds at every level. From the profile, geometric engravings decorate the ornate basket mounting, finished on a polished 18k white gold band.