Star 129 is the first diamond ever to guarantee the highest rating possible for scintillation on every diamond solitaire. Every Star 129 is ideally cut. They have increased the number of facets to maximize the beauty of the diamond without compromising the refractive properties. A traditional 58 facet diamond has sparkle but the greatest majority of the sparkle is on the outer edge of the diamond and not underneath the table of the diamond. The Star 129 has added 71 more facets to the pavilion, which is the bottom of the diamond. Every Star 129 diamond comes with a traditional diamond grading certificate from GIA or EGL, as well as a Gemex Three Dimensional Light Performance Report that shows how well each diamond performs for light.