The Global Gemological Resesarch Association Institute is the  stard of excellence in gemstones services wldwide,since 1993 GRA. repts have proven to be the internationally recognized passpt f gemstones.F decades trade professionals,throughout the wld,turn to GRA. f their expertise,consistency reliability in gemstones identification grading.GRA.'s school of gemstones has been attended by in-trade gemstones manufactuiers,fine ieweley artisans the public at large,from over ninety countries throughout the wld.The methodology employed by GRA.'s highly trained experienced team of hundreds of scientific technicians gemologists,has allowed f the evolution of the perfect fmula regarding gemstone procedures, rept recd keeping,gem & jewelry security   hling.GRA's state-of-the-art labaties are located  in the heart of the gem & jewelry districts throughout the wld.GRA.-The Stard of Excellence in gemstones   Fine Jewelry Evaluation Wldwide.