IGI Buys AGL to Create a Global Powerhouse in Coloured Gemstone Certification

The International Gemological Institute (IGI) has acquired American Gemological Laboratories (AGL), bringing together two of the most influential names in gem testing and certification and significantly strengthening global capabilities in coloured gemstones.

The transaction unites IGI’s worldwide laboratory network, infrastructure and market reach with AGL’s renowned scientific expertise in coloured-gemstone analysis and origin determination. The combined platform is designed to set a new standard for trust, transparency and consistency in gemstone certification across international markets.

IGI, one of the world’s largest independent diamond grading and certification organisations, said the acquisition expands its presence in the fast-growing coloured gemstone segment while preserving the scientific independence and integrity that define both institutions.

“This is a transformational moment for our industry,” said Tehmasp Printer, Managing Director and Global Chief Executive Officer of IGI. “AGL’s leadership in coloured gemstone science, combined with IGI’s global scale, allows us to build a future-ready certification ecosystem—one that delivers reach and consistency without compromising scientific rigour. Together, we are raising the global benchmark for trust and transparency.”

Under the terms of the transaction, AGL will continue to operate independently under its established brand. The laboratory will remain headquartered in New York, with Chris Smith continuing in his role as President and Chief Gemologist. No immediate operational changes are planned, and clients can expect continuity in technical standards and service levels.

The partnership is expected to accelerate AGL’s international expansion by leveraging IGI’s global infrastructure, enabling coloured gemstone certification services to reach markets beyond the United States. For IGI, the acquisition broadens its addressable market, diversifies revenue streams and enhances long-term growth through shared research, innovation and cross-market integration.

Education and training will also be a key focus. IGI plans to strengthen its global coloured gemstone education programs by incorporating AGL’s specialised research, scientific methodologies and teaching expertise.

The acquisition is supported by Blackstone’s long-term investment strategy. IGI said it will apply the same disciplined approach that has driven its recent global expansion investing in laboratory infrastructure, talent development and education to support AGL’s continued growth and scientific leadership.

Founded in 1977, AGL is widely recognised for pioneering country-of-origin reporting for coloured gemstones in the United States. Its clients include leading luxury brands, prestigious auction houses, manufacturers, retailers and private collectors worldwide.

The deal also deepens strategic ties between the United States—the world’s largest fine jewellery and coloured gemstone market and India, a major global hub for gemstone sourcing, manufacturing and certification. The combined organisation aims to meet rising industry demand for provenance, transparency and consistent global standards.

Commenting on the acquisition, Chris Smith said it marked “a pivotal opportunity” for AGL. “With the backing of Blackstone and the international reach of IGI’s facilities, we will be able to expand and elevate our coloured stone services globally, while reinforcing the highest standards of integrity, service and scientific excellence.”

Dev Shetty, Founder and CEO of Jemora Group and a former executive at Gemfields and Fura Gems, acted as strategic advisor on the transaction.