GIA has many offices in Hongkong, new york and Belgium. It seems that Beijing is about to open. Son, everyone can detect a lot of diamonds every day, and not all diamonds will be sent to GIA for testing. There are testing institutions all over the world, and there are naturally many testing personnel. Under normal circumstances, the cutter will send the diamonds to GIA in batches, and return them directly to the cutter in batches after testing.