IGI's supreme position in the gemological world is no coincidence. It is the result of continuous research, support and synergy with professionals and consumers alike.

IGI is the largest organization of its kind, operating 20 laboratory locations around the world grading finished jewelry, natural diamonds, lab-grown diamonds and gemstones - and 14 schools of gemology graduating thousands of new jewelry professionals each year.

The World Leader in Confidence

IGI is the only worldwide gemological institute serving consumer confidence by evaluating and grading finished jewelry creations, as well as loose diamonds and colored gemstones. Today IGI provides industry-wide confidence, screening millions of carats of small diamonds, separating natural from lab grown on behalf of industry leading designers and brands.

gemologists grading and assessing gemstones and jewelry

The World leader in Accreditation

IGI is the world’s first gemological laboratory to hold ISO accreditation in both natural and lab grown diamond grading. The Organization for International Standardization 17025 laboratory competence certification is considered the single most important standard for calibration and testing laboratories across the globe, covering all laboratory environments.

The World Leader in Sustainability

IGI is the world’s first gemological laboratory to commit to carbon neutrality, joining the Responsible Jewelry Council, International Precious Metals Institute, and Initiative for Responsible Mining Assurance in an association with SCS Global Services for the purpose of mitigating the laboratory’s environmental impact.

The World leader in Hearts & Arrows diamond grading

IGI pioneered grading standards for “Hearts & Arrows” diamonds, cut so precisely that their facet reflections overlap when viewed in a reflective scope. Hearts & Arrows precision is typically associated with Excellent-Ideal cuts of superior quality. IGI was the first institute to offer co-branded reports to Hearts & Arrows diamond manufacturers and sellers and has become the preferred authority for Hearts & Arrows diamonds sold in Asia.

The World leader in Lab Grown diamond grading

IGI pioneered the full grading of lab grown diamonds in 2005, providing a first foothold in authenticity and standardization for this growing industry segment. Today IGI has more experience and expertise than any other organization, instilling confidence in lab-grown diamond grading for the entire industry - from manufacturers and retailers to consumers.

The World Leader in Jewelry Evaluation

Issuing millions of reports annually, IGI’s experience and reach are unrivaled. IGI is the most trusted name in jewelry grading across North America, Europe, and Asia. In 2020, responding to explosive growth in online sales, eBay India created a national program for sellers to have products graded by IGI, empowering trust and confidence among buyers in the world’s largest domestic jewelry market.

The World Leader in Education

Offering more courses in more locations around the world, IGI’s schools of gemology are unrivaled in diversity and reach, offered in-person and online via customizable webinars and eLearning programs. From rough diamonds to computer-assisted jewelry design and retail support, IGI goes above and beyond traditional diamond and gemstone training, fostering creativity and graduating thousands of new jewelry professionals each year.

The World Leader in Solutions

IGI instructs a wider variety of courses, provides a wider array of services, and grades a wider variety of gemstones and jewelry in more locations around the world than any other gemological organization.

IGI co-created the modern laser-inscription process, was first to issue Jewelry Identification Reports, first to offer rough diamond courses, first to protectively seal diamonds, first to issue comprehensive cut-grading criteria, first to offer appraisal services and the first to offer co-branded reports in cooperation with renowned jewelry brands. Today IGI is an industry leader in sustainability and environmental stewardship efforts, with programs and resources designed to help other jewelers in this all-important area.

Adding value through authenticity

In the modern world even experts require specialized equipment to detect gemstone treatments and determine natural or lab grown origins. IGI has been developing and implementing the world’s most advanced identification spectrometry since the 1980s, pioneered full assessment of lab grown diamonds in 2005 and is the world’s first laboratory to hold ISO certification in both natural and lab grown diamond grading.

Partners in protection

To partner with IGI is to share in our commitment to transparency, authenticity and full disclosure for your clients. Providing independent authentication of your purchase from the world leader in jewelry evaluation builds a value-chain of protection from its creation all the way into your clients’ hands.

Commitment to clients

We are passionate about cultivating a more sustainable and compassionate jewelry industry. A shared commitment to transparency, authenticity and disclosure in the area of diamond, gemstone and jewelry analysis serves as the foundation of a partnership with IGI.