An IGI jewelry certificate adds an increased comfort level to your purchase. Because the quality of your purchase has been independently verified, you can feel assured that you have made a wise buying decision and that you have received exactly what you have paid for. IGI is one of the leading gemological institutions worldwide. They are headquartered in New York City and issue their grading reports through the services of their staff of graduate gemologists utilizing a state of the art laboratory. We are proud to use diamonds categorized as F-G color and VS1 clarity as a minimum standard throughout all of our diamond jewelry. Our large single stone items come with a GIA Certificate.  The reason we only use GIA for single stone items is that GIA does not appraise gemstones which are mounted (or set) in jewelry.