.86 Two-Toned Art Deco Diamond Engagement Ring in 14k.  Stand out from the crowd with this romantic Art Deco two-toned engagement ring! Set with a .86 carat Old European cut diamond, this solitaire ring has a balance of engraved 14k yellow gold and a structured 14k white gold mounting. From the profile, a filigree design decorates the gallery rail and shoulders of the band. An expertly designed vintage ring with timeless beauty.