5 Carat Emerald Cut Aquamarine w/ Diamonds in 14k White Gold.  This Art Deco cocktail ring features a 5.71 carat emerald cut aquamarine with .03 carats of round accent diamonds and set in 14 karat white gold. The size and setting of this ring make it a perfect cocktail party companion, but you could always wear this on a normal day out. The angular shoulders are accented by the small diamonds and milgrain borders to complete this perfect vintage beauty.