Blue Nile was the first to apply ideal standards of brilliance to the emerald cut diamond. A culet and higher crown – as well as exceptional proportions, symmetry, and polish – maximize brilliance and stop light from escaping. This brilliance is achieved by larger crown facets which capture more light, while the distribution of pavilion facets reflects more light. In addition, all Blue Nile Signature emerald-cut diamonds have a guaranteed clarity of VS2 or better, so you can be confident yours will be eye-clean.