GTL Laboratories are respected diamond grading and coloured gemstones certification laboratory. We have pioneered the development of the first scientific system used to evaluate how well a diamond and colorgems has been cut. A diamond’s cut is the most important C of all of the four C's. When a diamond is well cut it reflects and refracts light to the maximum degree. GTL has been acclaimed as a worldwide innovator due to our extensive research and development in determining the cut grade of diamonds and other gemstones very well. we are with our cerficates services to all over worldwide with doorstep delivery services.

Our lab is equipped with the most advance gem testing equipment and well trained professionals to offer the best services in the shortest possible time frame. Our expertise lies in offering Services for Colored Stone Testing, Pearls Testing, Diamond Grading, and Gemstone Treatment Identification.