The American Gem Trade Association Gemological Testing Center (AGTA GTC) is the natural colored gemstone industry's premier independent laboratory.   The AGTA GTC serves the industry and the public with a complete range of colored gemstone and Pearl-related services. These services include normal gemstone identification, origin reporting, and pearl identification.   The laboratory is equipped with the latest, technologically advanced, investigative equipment that allows the AGTA GTC's team to achieve rapid and scientifically accurate results within a time frame that meets the needs of its clients.