1 Carat Marquise Diamond Engagement Ring in 14K Yellow Gold.  This marquise diamond engagement ring features a lovely 1.03 carat genuine natural diamond. The primary diamond is nearly colorless with soft reflections of honey yellow. On both sides of the primary diamond lay two (2) .05 carat accent diamonds. The 14k yellow gold band is elegant and traditional, leaving the focus to the beauty and brilliance of the marquise cut diamond.