Vintage Half Carat Diamond Filigree Engagement Ring in Yellow Gold.  This fabulously ornate two-toned Art Deco engagement ring features a .49 carat Old Mine Cut diamond set in 14 karat white gold sat atop wonderful filigree work up the shoulders. The band and setting of this ring are as beautiful as the diamond at its center, with chevron engravings continuing below the filigreed shoulders. Being set in white gold allows this ring to take advantage of the warm yellow gold band without it adding yellow to the diamond, also providing some beautiful contrast.