The Gemmological Institute of America, (GIA) is the largest and most respected non-profit source of gemmological knowledge in the world. While the GIA conducts scientific research and grades Laboratory Grown Diamonds, its focus are predominantly mined diamonds.
IGI certifies the widest variety of gemstones and jewellery than any other organization ranging from mined diamonds, Laboratory Grown Diamonds, pearls and other gemstones. In recent years, the IGI has become the recognised world standard in grading Laboratory Grown Diamonds. All Chelsea Rocks diamonds are accompanied by an IGI grading report for authenticity.