139.36 ct. Aquamarine

Color : White diamonds color range from D (colorless, the purest white) to Z (light color). D, E and F are colorless diamonds, G, H , I and J are near colorless , K and L are faint color, M to Z have a light color.
Aquamarine : Blue variety of Beryl (Silicate). Aquamarine is named after it's bleu color similar to the blue of the sea. It is a different gemstone than blue Topaze.
Cabochon cut : Means a polished dome shaped gemstone stone, without facet.