Among many gemological labs around the world, one of the best and largest gem lab is GSI https://gemscience.net/ Their offer products, reports and sevices of best quality, unmatched and accurate, all across their global branches. In grading industry they have gained reputation and experience which is well known and works in their favour. They have team of professional and experianced members. GSI have tools that let clients to virtually peek inside the labs, as they take transparency in work seriously and as priority. In working with polishing facilities and consulting with cutters, they are also involved actively.