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

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

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 determine naturally …

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 …

了解 IGI 钻石和宝石认证，其质量和真实性在全球范围内广受信赖。 了解 IGI 的分级标准和全球认证流程。

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, …

Have an enquiry related to education, an interest in our online courses, or just a question that needs answered? Contact IGI today.

IGI 的宝石学院是探索令人惊叹的钻石、宝石和珠宝世界的终极源泉。 无论您是想成为更自信的买家还是行业专业人士，IGI 都能为您提供世界上最多样化的课程，您可以亲自参加，也可以通过在线学习和 …

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