GIA (Gemological Institute of America)

The Gemological Institute of America (GIA) is a respected organization that specializes in studying and grading gemstones, especially diamonds. They provide expert assessments of a stone’s quality, including its cut, color, clarity, and carat weight—the "Four Cs." GIA also offers education for gem professionals and consumers, and their grading reports help verify a gemstone's authenticity and value. Their work ensures confidence and transparency in the jewelry industry, making GIA grading a trusted standard for identifying and evaluating gemstones worldwide.