Gemological Institute of America (GIA)

Founded in 1931 by Roger Shipley, this non- profit organization upholds the highest standards for grading diamonds and other precious gems. The GIA has one of the most-respected and well-regarded gemmological laboratories in the world; GIA was responsible for developing and standardizing the diamond grading system that is used today by nearly all other gem labs. A GIA certified diamond is always accompanied by an official certificate proving the high quality of the diamond.

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