Explore IGI diamonds and gemstone certification trusted worldwide for quality & authenticity. Learn about IGI’s grading standards & global certification process.

This report provides an opinion by IGI, and neither IGI’s original client nor any purchaser of the article shall rely on this report as a guarantee, appraisal, or warranty.

Without disassembling mounted stones or complex pieces, IGI experts perform thorough, objective analysis. IGI screens every gemstone using state of the art technologies to …

IGI was the first laboratory to develop reports for finished jewelry and continues to lead the field today. More complex than the analysis of loose gemstones, IGI’s expertise in the analysis and …

Verify your IGI report and explore trusted diamond and gemstone certification. IGI grading reports ensure accuracy in cut, clarity, color, and authenticity

An IGI Diamond Report is your foundation for informed and confident diamond ownership. Our reports, renowned for their accuracy, deliver expert analysis supported by detailed diamond …

Discover the diamond grading process at IGI. Learn about the diamond grading scale, overall grading process & how the diamond quality chart is used for assessment.

IGI Natural Diamond Reports give an accurate assessment of a diamond’s cut, color, clarity, and carat weight according to strict international standards, supported by detailed diamond …

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IGI operates 31 laboratories around the world grading finished jewelry, natural diamonds, lab-grown diamonds and gemstones, along with 18 schools of gemology graduating thousands of …