.45 Geometric Art Deco Engagement Ring in 18K White Gold.  This gorgeous Art Deco engagement ring features a .45 carat natural diamond in 18k white gold. The center stone has a slightly warm hue and is set in six prongs and is mounted in a hexagon  setting. The gallery and shoulders are decorated with Art Deco filigree that accentuate the 18k white gold band. This vintage engagement ring showcases beauty in all of its details that can be admired for years to come.