GIA certified diamonds

The Gemological Institute of America is the world’s foremost authority on diamonds, colored stones, and pearls. GIA exists to protect all purchasers of gemstones, by providing the education, laboratory services, research, and instruments needed to accurately and objectively determine gemstone quality.

A nonprofit institute, GIA's mission is to ensure the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science, and professionalism through education, research, laboratory services, and instrument development. GIA attained its leadership role through decades of integrity and ingenuity, and everything we do is still driven by this mission.
 

GIA is where students from all over the world build successful careers in the gem and jewelry field. The Graduate Gemologist (G.G.) diploma, which focuses on gem grading and identification, is the industry’s highest professional credential. And with its Graduate Jeweler, Applied Jewelry Arts, and Accredited Jewelry Professional programs, GIA offers training geared to every aspect of the industry. Goldstock Jewelers has a Graduate Gemologist on staff and available for all of our Gemological needs, which is something that most jewelry stores can not say.

GIA is the global leader in gemological research, and its findings serve to protect the consumer. Using sophisticated technology, Institure researchers analyze thousands of samples each year. When new synthetic gems and artificial enhancement processes enter the marketplace, GIA is there to detect them.

GIA is the world’s most respected gemological laboratory, entrusted with gradint and identifying more gems than any other lab including the Hope, the Taylor-Burton, the De Beers Millennium Star, and the Incomparable. Located in major gem and jewelry centers around the world, GIA laboratories are staffed by expert diamond graders and gemologists, whose work sets the standard for grading practices worldwide.

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