1940s Old Euro Diamond Filigree Engagement Ring.  This wonderful vintage engagement ring features a .26 carat Old European cut diamond set in 14 karat white gold over a 14 karat yellow gold band. The filigree work making the yellow gold band is the best part of this ring, with a stunning view from every angle of swirling wire work and elaborate engravings. This will make a very special engagement ring that will stand out due to its beautiful vintage craftsmanship.