2.56 Three Stone Diamond Engagement Ring 14k Yellow Gold.  This modern, three stone engagement ring features 2.56 carats of natural diamonds in 14k yellow gold. The GIA-certified, Old Mine Cut center diamond has thicker facets that will allow this stone to glitter even in romantic candlelight. The center stone has a faint champagne hue that brings a subtle dimension to the near colorless accent stones. Two accent diamonds rest on either side of the primary stone, weighing in at .54 carats and .52 carats. All three gemstones are prong set and have a classic style and sensibility. The 14k yellow gold band is slightly tapered and will look beautiful next to a yellow gold wedding band. This engagement ring reaches 5.49 mm above the finger and weighs a total of 3.87 grams.