Cambay Gem Lab or CGL is a Nonprofit Organization Dedicated To Research in the field of Gemology. CGL Aim Is To Protect All Buyers And Sellers of Gemstones By Setting And Maintaining The Standards Used To Evaluate Gemstone Quality. An CGL Certificate clearly discloses the details of any item it accompanies , providing confidence for both buyer and seller. CGL, Over The years has Been One Of The Main Trade Center For Gems and Jewellery. The CGL Report is based on a precious stone analysis , which is designed to identify the species and variety of a colored Gemstone. The CGL Report clearly states whether the stone is natural or synthetic , provides other data describing its shape , cut , weight , measurements , color , transparency and major optical characteristics , and also includes a detailed photograph of the stone.