1.39 Diamond Engagement Ring in 14K Yellow Gold. Take your loved one’s breath away with this 1.39 carat diamond engagement ring in 14k yellow gold. The center stone is a 1.39 carat Round Brilliant cut diamond set in four prongs. Two (2) .08 carat bullet diamonds flank the center stone. The three diamonds are nearly colorless and have an impressive clarity rating. From the profile, a classic basket mounting supports the diamonds finished on a polished 14k yellow gold band.