(IDEX Online) - Diamond tech firm Sarine has joined forces with the National Gemstone Testing Center (NGTC) in China to offer "light performance" grading reports.They go beyond the 4Cs and measure brilliance, sparkle, fire and light symmetry, on a scale for inimum to exceptional, resulting in an overall light performance grade. The collaboration combines Sarine's development in AI-based grading for the 4Cs and light performance with NGTC's extensive gemological research and diamond testing expertise.Sarine Technologies, based in Israel, entered into a strategic agreement with NGTC in September 2019.They will provide co-branded authentication reports in the first instance for the Rose D???,? ?Amour brand by Yuanyumei (Y & M) Jewelry, a leading high-end Chinese jewelry brand.Mr ZhiBin Ye, president of NGTC, said: "Consumers will experience the benefits of diamond light performance testing technology for more confident and safer buying."