The Gemological Institute of America (GIA) is an independent, nonprofit organization that conducts gem research, educates gem professionals, and sets the standards for determining diamond quality. One of the GIA’s main functions is the grading of diamonds through the 4Cs of diamond quality: color, clarity, cut and carat weight.
To ensure that the organization’s diamond quality assessments are completely objective and unbiased, the GIA does not mine diamonds, nor does it buy, sell, or trade them commercially. It does not appraise diamonds and is not involved in diamond pricing or valuation. This makes the GIA the leading organization of diamond grading, setting the gold standard for diamond quality.
Considering the quality of your diamond? The GIA-graded diamonds tell all.