.58 Solitaire Sapphire Engagement Ring in 14K Yellow Gold.  This .58 carat deeply saturated, cool-toned sapphire reflects a spectrum of colors from darker Aegean to Prussian blue. The primary stone is set in four (4) prongs on a 14k yellow gold band. From the silhouette, the slender, golden band is slightly tapered near the head of the stone. This traditional, solitaire engagement ring can be resized as needed.