1950s Aquamarine Diamond Cocktail Ring in Platinum.  This beautiful Mid-Century cocktail ring features a 13 carat aquamarine with diamond accents set in platinum. The center stone has a light sky blue and is set in four (4) platinum prongs. Flanked on both sides of the aquamarine, six (6) .36 carat and four (4) .17 carat near colorless diamonds give a clean and elegant look. From the profile, a Mid-Century cathedral mounting holds the sparkling diamonds and aquamarine, finished on a polished platinum band. Dazzling in design, this cocktail ring reaches 8.64mm above the finger and weighs 10.8 grams.