igi - jewelry & gemstone grading | next generation gemology
igi is the world's largest independent lab for testing & grading diamonds, gemstones, & jewelry, with 29 labs & 18 schools in 10 countries.
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igitwitter is : twitter.com/igiglobal
igifacebook is : facebook.com/internationalgemologicalinstitute/
igiinstagram is : instagram.com/igiworldwide/
igilinkedin is : linkedin.com/company/igi-worldwide/
igi's website is igi.org