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

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

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.

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 certification, …

International Gemological Information, a division of IGI, was established in New York in 1981, as an independent source for unbiased appraisals of gems and jewelry.

Protect your diamond’s identity with IGI’s registration and recovery services. Ensure easy retrieval and secure access to your diamond’s certification details.

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 certification.

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