GRA is the standard of excellence in gemstones services worldwide, since 2001 GRA reports have been proven to be the internationally recognized passport for gemstones. For decades trade professionals, throughout the world, turn to GRA. for their expertise, consistency and reliability in gemstones identification GRA's school of gemstones has been attended by in-trade gemstones manufacturers, fine jeweley artisans and the public at large, from over ninety countries throughout the world.