GSI is one gemological lab that I trust for my orders among other gem labs and would like to recommend them. You can get here
https://gemscience.net/ their contact numbers. They offer to sort of melee, cut grade analysis, light analysis reports, origin testing of loose diamonds and gemstones, treatment identification and generate customized grading reports of several types. GSI also offers a variety of educational programs to help prepare the new generation of professional graders. Their priority is providing high-quality services with transparency and accuracy.
