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Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.
Report Check. GIA reports represent the highest standard of reliability, consistency and integrity. And now, GIA Report Check is available for all GIA reports, providing you with an additional level of assurance.
You can manage your team members and provide access to My Laboratory, update payment preferences, view open balances and create shipping memos. Also, view and manage the status of your items being graded at a GIA laboratory, add services, print reports, download GIA report PDFs and much more.
The world leader in gemmological research, GIA breakthrough discoveries deepen our understanding of gemstones and the world.
GIA Diamond Grading Report. The GIA Diamond Grading Report includes an assessment of a diamond’s 4Cs – color, clarity, cut, and carat weight – along with a plotted diagram of its clarity characteristics and a graphic representation of the diamond’s proportions.
We issue a variety of diamond reports, ranging from the GIA Diamond Dossier to the GIA Diamond Origin Report. Learn what each report can tell you about your diamond.
GIA exists to connect people to the understanding of gems. As a long-standing scientific authority, GIA is not only a unique source for diamond knowledge, its grading reports inspire confidence wherever they appear.
From the Hope diamond to the Spirit of the Rose, the Taylor Burton and the Lesotho Promise, we are trusted by museums and top auction houses all over the world to grade and research nature’s finest treasures.
The GIA Melee Analysis Service screens natural diamonds from simulants, laboratory-grown and potentially HPHT treated natural diamonds for round and fancy-shaped melee.
Learn how laboratory-grown diamonds were created, their social impact, and how to tell them apart from natural diamonds. Also learn about GIA’s Laboratory-Grown Diamond Report and how GIA scientists grade laboratory-grown diamonds.
