IGI | Jewelry & Gemstone Grading


IGI grades the widest variety of gemstones and jewelry in more corners of the world than any other gemological organization.

As the global leader for jewelry assessment our experience and reach are unrivaled. Renowned for diamonds and colored gemstones, we are equally trusted with the grading of pearls, exotic carvings, fine jewelry pieces and modern synthetics and simulants.


Diamond Report

Jewelry report

Colored stone report

Lab Grown Report

Enroll in IGI’s School of Gemology to discover the breathtaking world of diamonds, gemstones and jewelry. With more courses covering more topics in more countries than any other organization, IGI is the perfect choice for invested jewelry professionals and consumer enthusiasts alike.

Polished Diamond

This course is fast-paced and will quickly bring you to a level where you can identify, grade and price diamonds according to international grading and trading practices. It will give you a thorough understanding of the grading standards followed worldwide and is ideally suited for individuals with tight time constraints.

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Rough Diamond

The beauty of a diamond emerges not only after it has been polished; nature endows diamonds with beautiful and unique shapes, and to study them in their rough state is an art and science in itself. This course is one-of-a-kind, and the only such practical evaluation rough diamond course available in the market

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Colored Stones

This course imparts expertise and knowledge to a gem enthusiast and enables him/her to identify, grade and value gemstones based on international standards. The course information is closely aligned with the international colored stone industry, which will enable the candidate to easily relate to current market dynamics and terminologies.

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The IGI pearl course dives deep into the history of pearls, their varieties and unique growth structures. During the course students will learn to recognize cultured and natural pearls as well as their value and treatments.

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Jewelry Design

IGI’s Jewelry Design Graduate course brings out each individual’s innate creativity, helping enthusiasts to design with ability and confidence. It makes an apprentice designer learn the basics and complexities of designing any type of jewelry, along with estimating its cost. Through practical work, designers are assisted to express their creativity by designing a portfolio of their own styles.

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Jewelry CAD

With advanced CAD / CAM technology developed for the jewelry industry, the sky is the limit for boosting your creativity. IGI’s Professional Jewelry Designer (CAD) course teaches you to beautify your designs and creations using the wide range of professional tools found in Rhino 4.0 software.

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Retail Workshops

IGI also offers retail sales programs and seminars to companies that wish to offer their staff enhanced gemological knowledge required for their sales presentation.

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IGI | Jewelry & Gemstone Grading IGI Blog & News

Enjoy a collection of information from the world of diamonds, colored gemstones and fine jewelry.

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IGI | Jewelry & Gemstone Grading

IGI | Jewelry & Gemstone Grading

IGI | Jewelry & Gemstone Grading

Shapes Of Diamonds The Complete Guide

July 2018 | John Doe

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IGI | Jewelry & Gemstone Grading GEMSTONE GUIDES

Diamond 4Cs

Diamond Shapes

Jewelry care tips

IGI | Jewelry & Gemstone Grading

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IGI | Jewelry & Gemstone Grading


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