The International Gemological Institute (IGI) is a leading global authority in gemstone certification and grading, trusted by retailers, manufacturers, and consumers alike. IGI plays a key role in verifying quality, authenticity, and ethical sourcing—particularly in the lab-grown diamond and fine gemstone sectors. Jewellery Focus covers IGI’s certification standards, lab innovations, market influence, and role in consumer education. Our reporting supports UK jewellery professionals seeking clarity on grading practices, accreditation, and global benchmarks in quality assurance.