IGI: A Trusted Gemological Laboratory for Diamonds

When it comes to gem certification, many are familiar with GIA (Gemological Institute of America) and HRD (Hoge Raad voor Diamant). However, there is another major player in the industry—the International Gemological Institute (IGI). While IGI is not as widely recognized in some regions, it holds significant global influence, particularly in the diamond trade.

A Brief History of IGI

Founded in 1975 in Antwerp, Belgium, IGI was established in the heart of the diamond industry, one of the world’s most prominent trading hubs. Over the years, it has grown into the largest independent gemological laboratory in the world. IGI now operates in multiple countries, including the United States, India, China, Thailand, and the UAE, making it one of the most accessible and widely recognized gem certification institutions.

Why IGI Is a Reliable Choice

IGI is particularly respected for its work in diamond certification, both for natural and lab-grown diamonds. Some of the key advantages of IGI include:

• Expertise in Diamonds – IGI specializes in grading both natural and synthetic diamonds, providing detailed assessments of color, clarity, cut, and carat weight.

• Pioneering Lab-Grown Diamond Certification – IGI was one of the first laboratories to develop and standardize grading processes for lab-grown diamonds, a rapidly growing market segment.

• Recognized in Major Jewelry Markets – IGI certification is accepted by major jewelry retailers and diamond exchanges worldwide, ensuring credibility in trade and resale.

How IGI Compares to GIA and HRD

In the gemological industry, GIA is often considered the gold standard, particularly for its strict grading criteria. However, IGI is known to be slightly more lenient in assessing color and clarity, meaning that an IGI-graded diamond might receive a slightly higher grade than one graded by GIA.

Despite these differences, IGI is highly respected, especially in Asia and the UAE, where its certificates are widely used in high-end retail and trading networks.

Market Influence & Growth

The influence of IGI has expanded significantly over the last decade. According to industry reports, IGI-certified diamonds now represent a significant portion of the global diamond trade:

• IGI certifies over 2 million diamonds annually, making it one of the most active gemological laboratories worldwide.

• In India, the world’s largest diamond cutting and trading hub, IGI certifies more diamonds than any other gemological institute.

• The lab-grown diamond market, valued at over $22 billion in 2024, relies heavily on IGI certification, as it was one of the first to establish lab-grown diamond grading standards.

Final Thoughts

I consider IGI a reputable gemological institute, alongside GIA and HRD. If you purchase a diamond with an IGI certificate, it holds significantly more credibility than an uncertified stone from a jewelry store. Of course, when buying high-value diamonds, it is always advisable to review the stone yourself or consult an expert. However, a certification from a respected laboratory like IGI provides reassurance and added value when investing in diamonds.

As the demand for lab-grown diamonds grows and IGI continues to expand its global presence, its importance in the diamond market is only set to increase.

 

Olga Bachurina,
Co-Founder of Venus in Libra,
Certified by GIA & Gübelin Academy