A stunning Cartier ring with a deep-green Colombian Emerald in the center accented with single-cut and european-cut diamonds. The square shaped emerald measures 11.36 x 10.88 x 6.27 mm and weighs 6.20 carat. The emerald accompanies a gemological report from AGL stating the country-of-origin as Colombia, with No Enhancement. Emeralds which are not enhanced are extremely rare and among the most sought-after material in the world. The ring is stamped "Cartier MTG" with serial no. 55-56015.