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The IGI story

Few things in life are more precious than Diamonds.  Trust is one of them.

Laboratories

Schools

Countries

Founded in Antwerp in 1975, IGI was driven by a passion for transparency in the diamond industry. Over the past 50 years, we have evolved into one of the world’s largest independent certifying bodies for both natural as well as lab grown diamonds. Each diamond we evaluate carries its own story, and our IGI certification ensures that every stone meets the highest standards of quality and authenticity, empowering buyers to make informed, confident choices. In a world filled with uncertainties, IGI stands firm in the belief that authenticity and trust backed by our IGI certification, are what truly shine.

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Explore your path

Discover tailored resources & opportunities for retailers, consumers & students. Choose your path to find what suits you best.

Consumers

Trade

Students

A million diamonds graded yearly, revealing why yours is one in a million.

Natural Diamonds

Lab Grown Diamonds

Colored Gems

Finished Jewelry

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Latest at IGI

IGI sparkles at NYFW

We brought our dazzling, IGI-graded diamonds and gemstones to the NYFW runway, adding extra brilliance to the latest collections. The collaboration, featuring pieces from Spring/Summer 2025 collections, highlighted the fusion of high fashion and expert gemology. With our trusted certification reports ensuring authenticity, we’re proud that the event raised over $100,000 for Multiple Sclerosis research.

IGI’s women empowerment initiative

Our mission is to bridge the gender inequality gap by bringing more women into the IGI workforce, training them to shine as experts in gemology, and helping them flourish in their careers. Just like a diamond, true empowerment is forged through transformation—starting with individuals and radiating out to influence business practices and society at large.

School of gemology

Elevate your skills and become a gemology expert at our school.

1.

Why become a professional gemologist?

Master the art of gemstone evaluation and open doors to a rewarding career in the jewelry world.

2.

Courses

We offer a variety of courses, including Diamond Grading, Colored Stone Identification, and Jewelry Design, tailored to suit both professionals and enthusiasts.

3.

E-learning

Stay ahead with our flexible online courses, designed for busy professionals and jewelry enthusiasts, covering essential gemological knowledge and industry trends.

4.

Our presence

IGI School of Gemology has a global presence with campuses in New York, Antwerp, and Mumbai, offering world-class education and corporate programs, backed by leading industry partnerships.

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