What Makes the Round Brilliant Diamond Cut So Popular?
1 August 2025
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With 31 laboratories and 18 schools in 10 countries, IGI employs a global workforce of experts and educators dedicated to industry service and consumer protection.
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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. This dedication is reflected by worldwide trust for IGI certified diamonds and IGI certified gemstones, which uphold the highest industry standards.
IGI grading reports play an essential role in the global diamond, gem, and jewelry market, serving as the common language of trust and confidence in the gemological world.
IGI analyzes every gemstone to identify species and variety, provide detailed information, and disclose any treatments present, ensuring the integrity of IGI certified gemstones for consumers.
IGI pioneered grading reports for finished jewelry, providing peace of mind for millions of consumers who purchase jewelry every day, at a much higher frequency than loose diamonds or gemstones.
IGI’s loose diamond reports clearly identify natural or lab-grown origin and document all aspects of the diamond’s value-setting 4Cs. With IGI certified diamonds, consumers are assured of quality and authenticity.
Offering more courses in more locations around the world, IGI’s school of gemology are unrivaled in diversity and reach, offered in-person and online via customizable webinars and eLearning programs.
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IGI consumer education is designed to prepare shoppers to make informed decisions when buying or selling diamonds, gemstones, and jewelry.
From rubies, sapphires and emeralds to the birthstones and beyond, explore the world of color in our colored gemstone tutorial.
See how laboratory grown diamonds are physically, optically and chemically identical to natural diamonds which formed in the earth.
Learn about Cut, Clarity, Color and Carat weight and the international grading system that determines the quality and price of a diamond.
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